Add functionality to create_node & create_volume to use existing disks of the same name. Also some pep8 fixes.
Add functionality to create_node & create_volume to use existing
disks of the same name.
Also some pep8 fixes.

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