provisioners/docker: only allow 'args' special
provisioners/docker: only allow 'args' special

jkburges/vagrant,kamazee/vagrant,philoserf/vagrant,dhoer/vagrant,clinstid/vagrant,marxarelli/vagrant,sferik/vagrant,tjanez/vagrant,jberends/vagrant,PatOShea/vagrant,janek-warchol/vagrant,TheBigBear/vagrant,mwarren/vagrant,senglin/vagrant,teotihuacanada/vagrant,juiceinc/vagrant,dharmab/vagrant,darkn3rd/vagrant,mwrock/vagrant,mwrock/vagrant,philwrenn/vagrant,lonniev/vagrant,johntron/vagrant,mpoeter/vagrant,modulexcite/vagrant,gbarberi/vagrant,mpoeter/vagrant,lukebakken/vagrant,philwrenn/vagrant,jhoblitt/vagrant,otagi/vagrant,sferik/vagrant,obnoxxx/vagrant,jhoblitt/vagrant,benizi/vagrant,TheBigBear/vagrant,Chhunlong/vagrant,dustymabe/vagrant,kamigerami/vagrant,chrisvire/vagrant,PatrickLang/vagrant,benizi/vagrant,otagi/vagrant,channui/vagrant,patrys/vagrant,jkburges/vagrant,pwnall/vagrant,muhanadra/vagrant,jfchevrette/vagrant,kamazee/vagrant,stephancom/vagrant,rivy/vagrant,mpoeter/vagrant,invernizzi-at-google/vagrant,wkolean/vagrant,kalabiyau/vagrant,sax/vagrant,clinstid/vagrant,loren-osborn/vagrant,tbriggs-curse/vagrant,petems/vagrant,tschortsch/vagrant,kamazee/vagrant,p0deje/vagrant,mkuzmin/vagrant,chrisroberts/vagrant,legal90/vagrant,h4ck3rm1k3/vagrant,genome21/vagrant,PatOShea/vagrant,ferventcoder/vagrant,marxarelli/vagrant,blueyed/vagrant,Chhunlong/vagrant,darkn3rd/vagrant,patrys/vagrant,loren-osborn/vagrant,PatrickLang/vagrant,teotihuacanada/vagrant,jtopper/vagrant,lonniev/vagrant,benizi/vagrant,dhoer/vagrant,tknerr/vagrant,dharmab/vagrant,tbarrongh/vagrant,aneeshusa/vagrant,stephancom/vagrant,signed8bit/vagrant,Avira/vagrant,ArloL/vagrant,ianmiell/vagrant,marxarelli/vagrant,evverx/vagrant,mwarren/vagrant,justincampbell/vagrant,modulexcite/vagrant,vamegh/vagrant,ferventcoder/vagrant,Sgoettschkes/vagrant,theist/vagrant,lonniev/vagrant,ianmiell/vagrant,petems/vagrant,justincampbell/vagrant,gitebra/vagrant,mkuzmin/vagrant,mpoeter/vagrant,genome21/vagrant,BlakeMesdag/vagrant,bdwyertech/vagrant,carlosefr/vagrant,jberends/vagrant,crashlytics/vagrant,invernizzi-at-google/vagrant,apertoso/vagrant,wangfakang/vagrant,Avira/vagrant,jmanero/vagrant,bryson/vagrant,janek-warchol/vagrant,h4ck3rm1k3/vagrant,benh57/vagrant,tomfanning/vagrant,Chhed13/vagrant,MiLk/vagrant,bheuvel/vagrant,jtopper/vagrant,theist/vagrant,philwrenn/vagrant,teotihuacanada/vagrant,wangfakang/vagrant,vamegh/vagrant,dustymabe/vagrant,tbriggs-curse/vagrant,mwarren/vagrant,jean/vagrant,sideci-sample/sideci-sample-vagrant,theist/vagrant,krig/vagrant,gitebra/vagrant,crashlytics/vagrant,kamigerami/vagrant,shtouff/vagrant,sni/vagrant,jtopper/vagrant,iNecas/vagrant,teotihuacanada/vagrant,juiceinc/vagrant,apertoso/vagrant,carlosefr/vagrant,PatOShea/vagrant,nickryand/vagrant,taliesins/vagrant,signed8bit/vagrant,tomfanning/vagrant,dhoer/vagrant,shtouff/vagrant,johntron/vagrant,loren-osborn/vagrant,chrisvire/vagrant,crashlytics/vagrant,jean/vagrant,wangfakang/vagrant,mitchellh/vagrant,mwrock/vagrant,PatOShea/vagrant,loren-osborn/vagrant,evverx/vagrant,tknerr/vagrant,carlosefr/vagrant,darkn3rd/vagrant,lonniev/vagrant,jhoblitt/vagrant,senglin/vagrant,sax/vagrant,gitebra/vagrant,kamazee/vagrant,legal90/vagrant,Chhed13/vagrant,taliesins/vagrant,patrys/vagrant,tjanez/vagrant,theist/vagrant,cgvarela/vagrant,doy/vagrant,ferventcoder/vagrant,sax/vagrant,chrisvire/vagrant,tbriggs-curse/vagrant,kalabiyau/vagrant,tschortsch/vagrant,tjanez/vagrant,ArloL/vagrant,lukebakken/vagrant,jean/vagrant,ianmiell/vagrant,mkuzmin/vagrant,patrys/vagrant,Avira/vagrant,muhanadra/vagrant,pwnall/vagrant,bdwyertech/vagrant,gbarberi/vagrant,tomfanning/vagrant,sni/vagrant,denisbr/vagrant,aaam/vagrant,lukebakken/vagrant,fnewberg/vagrant,tschortsch/vagrant,jmanero/vagrant,p0deje/vagrant,ArloL/vagrant,tomfanning/vagrant,lukebakken/vagrant,legal90/vagrant,juiceinc/vagrant,jfchevrette/vagrant,gpkfr/vagrant,miguel250/vagrant,ArloL/vagrant,myrjola/vagrant,bryson/vagrant,vamegh/vagrant,pwnall/vagrant,Ninir/vagrant,justincampbell/vagrant,darkn3rd/vagrant,tknerr/vagrant,ianmiell/vagrant,Endika/vagrant,gbarberi/vagrant,vamegh/vagrant,wangfakang/vagrant,MiLk/vagrant,bheuvel/vagrant,zsjohny/vagrant,tjanez/vagrant,bheuvel/vagrant,tbriggs-curse/vagrant,johntron/vagrant,bryson/vagrant,Sgoettschkes/vagrant,channui/vagrant,jhoblitt/vagrant,myrjola/vagrant,PatrickLang/vagrant,clinstid/vagrant,TheBigBear/vagrant,bshurts/vagrant,dharmab/vagrant,Chhed13/vagrant,blueyed/vagrant,Sgoettschkes/vagrant,muhanadra/vagrant,rivy/vagrant,bshurts/vagrant,Chhunlong/vagrant,kamigerami/vagrant,krig/vagrant,sferik/vagrant,gajdaw/vagrant,modulexcite/vagrant,signed8bit/vagrant,dhoer/vagrant,benh57/vagrant,stephancom/vagrant,fnewberg/vagrant,aaam/vagrant,bdwyertech/vagrant,shtouff/vagrant,otagi/vagrant,kalabiyau/vagrant,BlakeMesdag/vagrant,iNecas/vagrant,nickryand/vagrant,bshurts/vagrant,shtouff/vagrant,chrisvire/vagrant,philoserf/vagrant,BlakeMesdag/vagrant,senglin/vagrant,obnoxxx/vagrant,cgvarela/vagrant,gpkfr/vagrant,cgvarela/vagrant,jmanero/vagrant,mwrock/vagrant,wkolean/vagrant,gitebra/vagrant,johntron/vagrant,fnewberg/vagrant,legal90/vagrant,evverx/vagrant,dustymabe/vagrant,dustymabe/vagrant,krig/vagrant,genome21/vagrant,chrisroberts/vagrant,p0deje/vagrant,cgvarela/vagrant,tbarrongh/vagrant,Endika/vagrant,denisbr/vagrant,krig/vagrant,zsjohny/vagrant,Ninir/vagrant,apertoso/vagrant,miguel250/vagrant,modulexcite/vagrant,gajdaw/vagrant,gajdaw/vagrant,nickryand/vagrant,chrisroberts/vagrant,doy/vagrant,bryson/vagrant,benh57/vagrant,doy/vagrant,jfchevrette/vagrant,mitchellh/vagrant,petems/vagrant,philwrenn/vagrant,signed8bit/vagrant,sni/vagrant,taliesins/vagrant,Ninir/vagrant,gpkfr/vagrant,jkburges/vagrant,channui/vagrant,Avira/vagrant,gpkfr/vagrant,tbarrongh/vagrant,obnoxxx/vagrant,wkolean/vagrant,jmanero/vagrant,PatrickLang/vagrant,myrjola/vagrant,mitchellh/vagrant,TheBigBear/vagrant,sideci-sample/sideci-sample-vagrant,pwnall/vagrant,jberends/vagrant,senglin/vagrant,mitchellh/vagrant,Endika/vagrant,gbarberi/vagrant,muhanadra/vagrant,aneeshusa/vagrant,mkuzmin/vagrant,apertoso/vagrant,Sgoettschkes/vagrant,miguel250/vagrant,Chhunlong/vagrant,janek-warchol/vagrant,janek-warchol/vagrant,myrjola/vagrant,wkolean/vagrant,benh57/vagrant,h4ck3rm1k3/vagrant,jfchevrette/vagrant,miguel250/vagrant,blueyed/vagrant,kamigerami/vagrant,bdwyertech/vagrant,h4ck3rm1k3/vagrant,juiceinc/vagrant,jean/vagrant,carlosefr/vagrant,sni/vagrant,stephancom/vagrant,petems/vagrant,bheuvel/vagrant,jtopper/vagrant,crashlytics/vagrant,sideci-sample/sideci-sample-vagrant,MiLk/vagrant,iNecas/vagrant,aneeshusa/vagrant,sax/vagrant,tknerr/vagrant,chrisroberts/vagrant,jberends/vagrant,dharmab/vagrant,tbarrongh/vagrant,doy/vagrant,genome21/vagrant,aaam/vagrant,denisbr/vagrant,tschortsch/vagrant,bshurts/vagrant,taliesins/vagrant,otagi/vagrant,zsjohny/vagrant,aneeshusa/vagrant,jkburges/vagrant,aaam/vagrant,invernizzi-at-google/vagrant,zsjohny/vagrant,Chhed13/vagrant,kalabiyau/vagrant,justincampbell/vagrant,mwarren/vagrant,fnewberg/vagrant,rivy/vagrant,nickryand/vagrant,blueyed/vagrant,ferventcoder/vagrant,philoserf/vagrant,denisbr/vagrant,philoserf/vagrant,benizi/vagrant,marxarelli/vagrant,Endika/vagrant,invernizzi-at-google/vagrant,rivy/vagrant