`vagrant box list` added to error message for invalid subcommand to `vagrant box`
`vagrant box list` added to error message for invalid subcommand to `vagrant box`

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