Do not add automatically host / accept-encoding header
Do not add automatically host / accept-encoding header

Due to headers dictionary always have host / accept-encoding value, when
perform 'raw' request, host / accept-encoding header would be
duplicated. If you use AWSRequestSignerAlgorithmV4, this occurs invalid
payload hash.

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