Test that the environment has string keys
Test that the environment has string keys

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