docstr location and ex_only_active OS list_images
docstr location and ex_only_active OS list_images

Signed-off-by: Quentin Pradet <d17611fde61d73f8de1b8b01bc47d446558ccd8e@apache.org>

Kami/libcloud,mistio/libcloud,vongazman/libcloud,apache/libcloud,mistio/libcloud,andrewsomething/libcloud,apache/libcloud,Scalr/libcloud,andrewsomething/libcloud,ByteInternet/libcloud,Scalr/libcloud,Kami/libcloud,vongazman/libcloud,andrewsomething/libcloud,vongazman/libcloud,apache/libcloud,StackPointCloud/libcloud,Kami/libcloud,ByteInternet/libcloud,ByteInternet/libcloud,Scalr/libcloud,mistio/libcloud,StackPointCloud/libcloud,StackPointCloud/libcloud