tree a814bfd2875a6962d5c95cc809abcaac31004aad
parent 92507fa63500c024ace683ea295f459b20ff2c33
author zhufl <zhu.fanglei@zte.com.cn> 1479090210 +0800
committer zhufl <zhu.fanglei@zte.com.cn> 1479090210 +0800

Move wait_for_interface_status to waiters

This is to move wait_for_interface_status to waiters so it can
be used elsewhere. Besides, wait_for_interface_status returns
the detail of show_interface which is needed in testcases.

Change-Id: I3a8cee9cd344be295cb0cdef5930793403cc6bca