Add missing argument to ProviderVirtualBox::SyncedFolder#driver call
Add missing argument to ProviderVirtualBox::SyncedFolder#driver call

GH-2577 missed passing the `machine` to the `driver` method.

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