tree 3afebcfaa0c2aa7f40f5a93184cf40252babf582
parent 1313636b8ec64fd2c189548ba6800a5bd863464c
author guo yunxian <yunxian.guo@easystack.cn> 1480389178 +0800
committer guo yunxian <yunxian.guo@easystack.cn> 1484718294 +0800

Add namespace tags client and tests

As in the doc following, there are namespace tags apis, this patch
is to add them to the code.

[doc]http://developer.openstack.org/api-ref/image/v2/metadefs-index.html

Change-Id: I92b2c58d11828eafd9f876a46581279bb9b26e3d