test: fix spelling in _get_response_if_not_available()
test: fix spelling in _get_response_if_not_available()

"availale" -> "available"
Closes #757

techhat/libcloud,SecurityCompass/libcloud,techhat/libcloud,mistio/libcloud,wrigri/libcloud,supertom/libcloud,erjohnso/libcloud,wrigri/libcloud,wuyuewen/libcloud,mathspace/libcloud,StackPointCloud/libcloud,watermelo/libcloud,vongazman/libcloud,DimensionDataCBUSydney/libcloud,andrewsomething/libcloud,andrewsomething/libcloud,watermelo/libcloud,t-tran/libcloud,lochiiconnectivity/libcloud,mgogoulos/libcloud,ByteInternet/libcloud,ByteInternet/libcloud,DimensionDataCBUSydney/libcloud,iPlantCollaborativeOpenSource/libcloud,ZuluPro/libcloud,pquentin/libcloud,techhat/libcloud,niteoweb/libcloud,Scalr/libcloud,vongazman/libcloud,illfelder/libcloud,iPlantCollaborativeOpenSource/libcloud,SecurityCompass/libcloud,StackPointCloud/libcloud,ByteInternet/libcloud,lochiiconnectivity/libcloud,t-tran/libcloud,wuyuewen/libcloud,Kami/libcloud,ZuluPro/libcloud,iPlantCollaborativeOpenSource/libcloud,mgogoulos/libcloud,apache/libcloud,ZuluPro/libcloud,illfelder/libcloud,watermelo/libcloud,SecurityCompass/libcloud,lochiiconnectivity/libcloud,wuyuewen/libcloud,apache/libcloud,pquentin/libcloud,mathspace/libcloud,NexusIS/libcloud,andrewsomething/libcloud,samuelchong/libcloud,StackPointCloud/libcloud,erjohnso/libcloud,samuelchong/libcloud,apache/libcloud,supertom/libcloud,Kami/libcloud,NexusIS/libcloud,niteoweb/libcloud,mgogoulos/libcloud,Kami/libcloud,mathspace/libcloud,mistio/libcloud,DimensionDataCBUSydney/libcloud,Scalr/libcloud,t-tran/libcloud,vongazman/libcloud,niteoweb/libcloud,pquentin/libcloud,samuelchong/libcloud,wrigri/libcloud,illfelder/libcloud,Scalr/libcloud,erjohnso/libcloud,NexusIS/libcloud,supertom/libcloud,mistio/libcloud