tree 1f56eec4beda6ac0664280c3a704957d281bf727
parent 479863dd47beeb35aef5fd5541956658940c48cc
author jeremy.zhang <zhangjun_inspur@163.com> 1499145155 +0800
committer jeremy.zhang <zhangjun_inspur@163.com> 1499225356 +0800

Add test for showing snapshot metadata item

This patch adds test for the missing API (volume v2):
show specific metadata item for a snapshot.

Including:

[1] Add show snapshot metadata item API to v2 snapshots_client
[2] Add unit test for the API
[3] Modify test case: test_update_snapshot_metadata_item
[4] Add release note

According defcore(interop) patch is:
I672bbcb9983e7a3ace7769722d6ff97f7bc0ccc8

Change-Id: I3697406e5541bbdb191e4d6e63831be31b471e78