Check for nil config_path.
Check for nil config_path.

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