Fix make_signature method in the CloudStack driver to correctly handle square brackets.
Fix make_signature method in the CloudStack driver to correctly handle square
brackets.

munkiat/libcloud,watermelo/libcloud,NexusIS/libcloud,jimbobhickville/libcloud,StackPointCloud/libcloud,Cloud-Elasticity-Services/as-libcloud,ByteInternet/libcloud,mbrukman/libcloud,dcorbacho/libcloud,Itxaka/libcloud,cloudControl/libcloud,mgogoulos/libcloud,ClusterHQ/libcloud,aviweit/libcloud,kater169/libcloud,curoverse/libcloud,curoverse/libcloud,vongazman/libcloud,MrBasset/libcloud,t-tran/libcloud,schaubl/libcloud,Itxaka/libcloud,atsaki/libcloud,Itxaka/libcloud,niteoweb/libcloud,techhat/libcloud,aleGpereira/libcloud,niteoweb/libcloud,aleGpereira/libcloud,mbrukman/libcloud,SecurityCompass/libcloud,wuyuewen/libcloud,mathspace/libcloud,pquentin/libcloud,apache/libcloud,JamesGuthrie/libcloud,mathspace/libcloud,mtekel/libcloud,smaffulli/libcloud,kater169/libcloud,mistio/libcloud,Cloud-Elasticity-Services/as-libcloud,aviweit/libcloud,carletes/libcloud,apache/libcloud,atsaki/libcloud,ByteInternet/libcloud,StackPointCloud/libcloud,andrewsomething/libcloud,Kami/libcloud,schaubl/libcloud,erjohnso/libcloud,iPlantCollaborativeOpenSource/libcloud,wuyuewen/libcloud,sfriesel/libcloud,sgammon/libcloud,NexusIS/libcloud,schaubl/libcloud,ClusterHQ/libcloud,vongazman/libcloud,DimensionDataCBUSydney/libcloud,andrewsomething/libcloud,cryptickp/libcloud,illfelder/libcloud,illfelder/libcloud,ZuluPro/libcloud,mgogoulos/libcloud,jimbobhickville/libcloud,supertom/libcloud,niteoweb/libcloud,thesquelched/libcloud,supertom/libcloud,DimensionDataCBUSydney/libcloud,wido/libcloud,erjohnso/libcloud,wrigri/libcloud,ByteInternet/libcloud,mathspace/libcloud,watermelo/libcloud,SecurityCompass/libcloud,marcinzaremba/libcloud,mgogoulos/libcloud,wido/libcloud,lochiiconnectivity/libcloud,briancurtin/libcloud,mistio/libcloud,mtekel/libcloud,iPlantCollaborativeOpenSource/libcloud,MrBasset/libcloud,Kami/libcloud,marcinzaremba/libcloud,apache/libcloud,marcinzaremba/libcloud,t-tran/libcloud,NexusIS/libcloud,MrBasset/libcloud,smaffulli/libcloud,jerryblakley/libcloud,Scalr/libcloud,cloudControl/libcloud,pantheon-systems/libcloud,sfriesel/libcloud,JamesGuthrie/libcloud,smaffulli/libcloud,Verizon/libcloud,wido/libcloud,atsaki/libcloud,wrigri/libcloud,sergiorua/libcloud,andrewsomething/libcloud,carletes/libcloud,JamesGuthrie/libcloud,lochiiconnectivity/libcloud,dcorbacho/libcloud,sahildua2305/libcloud,curoverse/libcloud,jerryblakley/libcloud,jimbobhickville/libcloud,pquentin/libcloud,Verizon/libcloud,briancurtin/libcloud,ZuluPro/libcloud,wuyuewen/libcloud,munkiat/libcloud,aleGpereira/libcloud,illfelder/libcloud,DimensionDataCBUSydney/libcloud,mistio/libcloud,ZuluPro/libcloud,dcorbacho/libcloud,Cloud-Elasticity-Services/as-libcloud,munkiat/libcloud,sergiorua/libcloud,samuelchong/libcloud,StackPointCloud/libcloud,watermelo/libcloud,samuelchong/libcloud,t-tran/libcloud,thesquelched/libcloud,sfriesel/libcloud,kater169/libcloud,cryptickp/libcloud,SecurityCompass/libcloud,pquentin/libcloud,aviweit/libcloud,Verizon/libcloud,mbrukman/libcloud,pantheon-systems/libcloud,samuelchong/libcloud,supertom/libcloud,techhat/libcloud,Kami/libcloud,iPlantCollaborativeOpenSource/libcloud,cloudControl/libcloud,lochiiconnectivity/libcloud,erjohnso/libcloud,sergiorua/libcloud,sahildua2305/libcloud,pantheon-systems/libcloud,cryptickp/libcloud,sgammon/libcloud,mtekel/libcloud,sahildua2305/libcloud,briancurtin/libcloud,thesquelched/libcloud,Scalr/libcloud,techhat/libcloud,carletes/libcloud,vongazman/libcloud,jerryblakley/libcloud,wrigri/libcloud,Scalr/libcloud