Update CHANGES.rst
Update CHANGES.rst

Changes for #1275
apache/libcloud,mistio/libcloud,ByteInternet/libcloud,ByteInternet/libcloud,Kami/libcloud,ByteInternet/libcloud,mistio/libcloud,Scalr/libcloud,andrewsomething/libcloud,mistio/libcloud,Kami/libcloud,andrewsomething/libcloud,Scalr/libcloud,Scalr/libcloud,andrewsomething/libcloud,Kami/libcloud,apache/libcloud,apache/libcloud