communicators/ssh: call ready? when waiting
communicators/ssh: call ready? when waiting

This lets things like the SSH key go in

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