provisioner/shell: fix provisioner to use UnixReader [GH-477]
provisioner/shell: fix provisioner to use UnixReader [GH-477]

Packer was using the original file reader when uploading, instead of the UnixReader /cc @mitchellh

justincampbell/packer,umang1912/packer,mgk/packer,orivej/packer,higebu/packer,quantang/packer,BayanGroup/packer,jszwedko/packer,feateds/packer,vtolstov/packer,gbarberi/packer,bhcleek/packer,pvandervelde/packer,bryson/packer,gbarberi/packer,jsternberg/packer,qur/packer,stagrlee/packer,hashicorp/packer,jszwedko/packer,KohlsTechnology/packer,marklap/packer,pvanbuijtene/packer,higebu/packer,Xiol/packer,zakuro9715/packer,rodm/packer,ricardclau/packer,burnzy/packer,jean/packer,jamesbishopp/packer,atlassian/packer,mkuzmin/packer,p1-nico/packer,taliesins/packer,taliesins/packer,boumenot/packer,KohlsTechnology/packer,sgirones/packer,zeliff/packer,jgkim/packer,ChrisLundquist/packer,icnocop/packer,mwhooker/packer,aneeshusa/packer,KohlsTechnology/packer,rodm/packer,mansunkuo/packer,tb3088/packer,mwhooker/packer,kgrvamsi/packer,orivej/packer,zeliff/packer,ober/packer,taliesins/packer,avldya/packer,umang1912/packer,esemplare/packer,Akasurde/packer,quantang/packer,napramirez/packer,legal90/packer,mitchellh/packer,paulmey/packer,jarl-dk/packer,markpeek/packer,grubernaut/packer,leroux/packer,arizvisa/packer,grubernaut/packer,styro/packer,Akasurde/packer,ldejager/packer,life360/packer,yoctocloud/packer,marklap/packer,mgk/packer,jsternberg/packer,marc-ta/packer,mitchellh/packer,btd/packer,markpeek/packer,esemplare/packer,mindjiver/packer,Cbeck527/packer,oliviertremblay/packer,Cbeck527/packer,jimmythedog/packer,pieter-lazzaro/packer,tracyde/packer,kpettijohn/packer,mvanholsteijn/packer,icnocop/packer,trumant/packer,pieter-lazzaro/packer,rickard-von-essen/packer,ober/packer,uber/packer,jsternberg/packer,threatstream/packer,icnocop/packer,timsutton/packer,tas50/packer,bensojona/packer,dayglojesus/packer,dragon788/packer,pvanbuijtene/packer,eranchetz/packer,mafrosis/packer,dieu/packer,sequenceiq/packer,routelastresort/packer,cyberhouse/packer,zhuzhih2017/packer,henrysher/packer,hasJackb/packer,beni55/packer,jszwedko/packer,beni55/packer,mvanholsteijn/packer,timsutton/packer,styro/packer,dev-head/packer,rk295/packer,zhuzhih2017/packer,legal90/packer,ephemeralsnow/packer,smaato/packer,paulmey/packer,uber/packer,dave2/packer,dragon788/packer,rrva/packer,danschaffer/packer,evertrue/packer,jean/packer,bryson/packer,mgk/packer,bhcleek/packer,jonathankarsh/packer,pieter-lazzaro/packer,hazelesque/packer,dayglojesus/packer,avldya/packer,Cbeck527/packer,jamesbishopp/packer,sansb/packer,pearkes/packer,bensojona/packer,jimmythedog/packer,sean-/packer,jae2/packer,mkuzmin/packer,jean/packer,dieu/packer,tsmolka/packer,grubernaut/packer,BayanGroup/packer,trumant/packer,fnoeding/packer,monsterzz/packer,tb3088/packer,zeliff/packer,yoctocloud/packer,ttaylor249/packer,routelastresort/packer,rickard-von-essen/packer,ober/packer,sobrinho/packer,ttaylor249/packer,hazelesque/packer,visioncritical/packer,c22/packer,Silver90/packer,manicai/packer,mafrosis/packer,henrysher/packer,sean-/packer,mayflower/packer,manicai/packer,smaato/packer,jonathankarsh/packer,arizvisa/packer,mwhooker/packer,BayanGroup/packer,jgkim/packer,fnoeding/packer,tomwilkie/packer,hashicorp/packer,bryson/packer,zhuzhih2017/packer,jmptrader/packer,jsoriano/packer,gbarberi/packer,tracyde/packer,DualSpark/packer,napramirez/packer,pvandervelde/packer,qur/packer,cyberhouse/packer,threatstream/packer,jen20/packer,KohlsTechnology/packer,feateds/packer,samdunne/packer,tb3088/packer,dayglojesus/packer,justincampbell/packer,Silver90/packer,israelshirk/packer,rnaveiras/packer,p1-nico/packer,mayflower/packer,kpettijohn/packer,evertrue/packer,monsterzz/packer,arizvisa/packer,timsutton/packer,ChrisLundquist/packer,BayanGroup/packer,arizvisa/packer,danschaffer/packer,KFishner/packer,tsmolka/packer,sansb/packer,samdunne/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,ober/packer,jae2/packer,ephemeralsnow/packer,quantang/packer,mindjiver/packer,smaato/packer,bhcleek/packer,marc-ta/packer,burnzy/packer,rodm/packer,LinusU/packer,yoctocloud/packer,sean-/packer,timsutton/packer,icnocop/packer,monkeylittleinc/packer,paulvollmer/packer,gildas/packer-hyperv,trumant/packer,sneal/packer,fnoeding/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,stagrlee/packer,mohae/packer,life360/packer,oliviertremblay/packer,higebu/packer,vtolstov/packer,ldejager/packer,esemplare/packer,jsoriano/packer,rk295/packer,ricardclau/packer,jimmythedog/packer,eranchetz/packer,jamesbishopp/packer,ttaylor249/packer,hazelesque/packer,jsoriano/packer,LinusU/packer,c22/packer,routelastresort/packer,mkuzmin/packer,KohlsTechnology/packer,ChrisLundquist/packer,mohae/packer,jamesbishopp/packer,manicai/packer,jimmythedog/packer,qur/packer,noplay/packer,zhuzhih2017/packer,arizvisa/packer,aneeshusa/packer,hasJackb/packer,jasonchaffee/packer,mkuzmin/packer,sgirones/packer,monkeylittleinc/packer,Banno/packer,paulmey/packer,blairham/packer,gbarberi/packer,pearkes/packer,taliesins/packer,jamesleech/packer,pieter-lazzaro/packer,danschaffer/packer,yonglehou/packer,pecigonzalo/packer,ricardclau/packer,legal90/packer,masbog/packer,btd/packer,jonathankarsh/packer,higebu/packer,AlphaStaxLLC/packer,dantran/packer,eranchetz/packer,youhong316/packer,DualSpark/packer,masbog/packer,dev-head/packer,zakuro9715/packer,rodm/packer,Akasurde/packer,grubernaut/packer,hasJackb/packer,monkeylittleinc/packer,jae2/packer,Banno/packer,zakuro9715/packer,AlphaStaxLLC/packer,grange74/packer,marc-ta/packer,threatstream/packer,pvandervelde/packer,pecigonzalo/packer,dragon788/packer,sequenceiq/packer,mohae/packer,monsterzz/packer,c22/packer,leroux/packer,feateds/packer,jae2/packer,higebu/packer,KohlsTechnology/packer,mansunkuo/packer,mindjiver/packer,paulmey/packer,yonglehou/packer,sobrinho/packer,masbog/packer,sgirones/packer,Silver90/packer,shaunduncan/packer,noplay/packer,atlassian/packer,Silver90/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,beni55/packer,cyberhouse/packer,mitchellh/packer,smaato/packer,kgrvamsi/packer,burnzy/packer,evertrue/packer,markpeek/packer,vtolstov/packer,pieter-lazzaro/packer,henrysher/packer,mafrosis/packer,bryson/packer,AlphaStaxLLC/packer,pvanbuijtene/packer,sean-/packer,oliviertremblay/packer,mayflower/packer,zhuzhih2017/packer,grange74/packer,stagrlee/packer,bhcleek/packer,dantran/packer,israelshirk/packer,ChrisLundquist/packer,grubernaut/packer,sean-/packer,zhuzhih2017/packer,KFishner/packer,mitchellh/packer,sansb/packer,tas50/packer,jasonchaffee/packer,taliesins/packer,tsmolka/packer,jasonchaffee/packer,pvandervelde/packer,mwhooker/packer,visioncritical/packer,evertrue/packer,sobrinho/packer,mefellows/packer,jarl-dk/packer,ChrisLundquist/packer,hasJackb/packer,dayglojesus/packer,tas50/packer,Cbeck527/packer,atlassian/packer,youhong316/packer,rnaveiras/packer,pecigonzalo/packer,bryson/packer,markpeek/packer,shaunduncan/packer,pearkes/packer,KFishner/packer,routelastresort/packer,kpettijohn/packer,leroux/packer,rnaveiras/packer,sequenceiq/packer,dantran/packer,avldya/packer,taliesins/packer,leroux/packer,mefellows/packer,samdunne/packer,monkeylittleinc/packer,vtolstov/packer,dev-head/packer,boumenot/packer,pvandervelde/packer,arizvisa/packer,mohae/packer,rnaveiras/packer,mansunkuo/packer,sneal/packer,kgrvamsi/packer,mayflower/packer,orivej/packer,danschaffer/packer,mwhooker/packer,uber/packer,Xiol/packer,jmptrader/packer,rrva/packer,esemplare/packer,tb3088/packer,p1-nico/packer,stagrlee/packer,bhcleek/packer,dayglojesus/packer,lantrix/packer,kgrvamsi/packer,avldya/packer,p1-nico/packer,orivej/packer,justincampbell/packer,life360/packer,ChrisLundquist/packer,tas50/packer,quantang/packer,threatstream/packer,btd/packer,boumenot/packer,mitchellh/packer,ober/packer,jamesleech/packer,lantrix/packer,mvanholsteijn/packer,jasonchaffee/packer,yoctocloud/packer,jamesleech/packer,jonathankarsh/packer,mindjiver/packer,vtolstov/packer,mafrosis/packer,fnoeding/packer,LinusU/packer,mansunkuo/packer,marc-ta/packer,sneal/packer,rnaveiras/packer,youhong316/packer,tsmolka/packer,dragon788/packer,cyberhouse/packer,markpeek/packer,mansunkuo/packer,lantrix/packer,sean-/packer,timsutton/packer,Cbeck527/packer,zakuro9715/packer,paulvollmer/packer,tracyde/packer,tomwilkie/packer,ttaylor249/packer,rickard-von-essen/packer,sansb/packer,monsterzz/packer,grange74/packer,Sheile/packer,routelastresort/packer,c22/packer,justincampbell/packer,life360/packer,zeliff/packer,gildas/packer-hyperv,blairham/packer,Xiol/packer,aneeshusa/packer,qur/packer,dave2/packer,rrva/packer,pearkes/packer,grange74/packer,threatstream/packer,ttaylor249/packer,Sheile/packer,kpettijohn/packer,Sheile/packer,icnocop/packer,jmptrader/packer,dave2/packer,bensojona/packer,jmptrader/packer,mgk/packer,shaunduncan/packer,yoctocloud/packer,jen20/packer,dieu/packer,mefellows/packer,DualSpark/packer,quantang/packer,dantran/packer,sobrinho/packer,masbog/packer,Akasurde/packer,henrysher/packer,rnaveiras/packer,markpeek/packer,youhong316/packer,paulvollmer/packer,marklap/packer,visioncritical/packer,dieu/packer,pvanbuijtene/packer,sneal/packer,napramirez/packer,mvanholsteijn/packer,sneal/packer,jimmythedog/packer,rickard-von-essen/packer,marklap/packer,tas50/packer,jasonchaffee/packer,jen20/packer,jszwedko/packer,bryson/packer,tomwilkie/packer,trumant/packer,life360/packer,jsoriano/packer,jamesleech/packer,p1-nico/packer,mefellows/packer,tas50/packer,ephemeralsnow/packer,yonglehou/packer,p1-nico/packer,jen20/packer,Banno/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,atlassian/packer,tracyde/packer,feateds/packer,shaunduncan/packer,paulvollmer/packer,boumenot/packer,monkeylittleinc/packer,paulmey/packer,jsternberg/packer,jen20/packer,jean/packer,gildas/packer-hyperv,dev-head/packer,ricardclau/packer,Xiol/packer,jgkim/packer,mkuzmin/packer,bensojona/packer,gildas/packer-hyperv,jarl-dk/packer,pvandervelde/packer,ephemeralsnow/packer,mohae/packer,aneeshusa/packer,esemplare/packer,umang1912/packer,hazelesque/packer,boumenot/packer,samdunne/packer,ricardclau/packer,manicai/packer,LinusU/packer,yonglehou/packer,sequenceiq/packer,burnzy/packer,noplay/packer,smaato/packer,Akasurde/packer,hashicorp/packer,blairham/packer,israelshirk/packer,grange74/packer,jen20/packer,dave2/packer,atlassian/packer,mayflower/packer,sgirones/packer,ephemeralsnow/packer,AlphaStaxLLC/packer,jgkim/packer,legal90/packer,samdunne/packer,ricardclau/packer,DualSpark/packer,danschaffer/packer,dave2/packer,hashicorp/packer,ldejager/packer,timsutton/packer,grubernaut/packer,jarl-dk/packer,youhong316/packer,dave2/packer,tomwilkie/packer,dantran/packer,KFishner/packer,tsmolka/packer,c22/packer,pvanbuijtene/packer,napramirez/packer,israelshirk/packer,uber/packer,btd/packer,legal90/packer,mkuzmin/packer,rrva/packer,rickard-von-essen/packer,visioncritical/packer,atlassian/packer,beni55/packer,tb3088/packer,tb3088/packer,rk295/packer,youhong316/packer,oliviertremblay/packer,styro/packer,blairham/packer,paulmey/packer,rk295/packer,ldejager/packer,lantrix/packer,pieter-lazzaro/packer,noplay/packer,umang1912/packer,smaato/packer,pecigonzalo/packer,c22/packer,eranchetz/packer,tsmolka/packer,Sheile/packer,styro/packer,mafrosis/packer