updated changes.rst with new feature for ap-northeast-2 region in ec2.
updated changes.rst with new feature for ap-northeast-2 region in ec2.

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