tree dba3e08660bea80fb88d5fe5610a0a387c9cd360
parent 0c6dc8e70c305b43a0b72f8bcd9bb6bc2250711e
author zoukeke <zoukeke@cmss.chinamobile.com> 1486459520 +0800
committer Zou Keke <zoukeke@cmss.chinamobile.com> 1487153780 +0000

Add DeleteErrorException

In function “wait_for_server_termination”，it is in the waiting
for server to reach termination. So it's more reasonable to throw
a deleting error exception here when server going error.
This patch adds a DeleteErrorException and let function
“wait_for_server_termination” to use it. This makes the exception
message more clear when server(or other resources) entering error
status in the waiting for deletion.

And the DeleteErrorException will be used
in change I6f92f00b8fe4651c27ff4da783b004d29c526dfe

Change-Id: I6646ce732a4f3802338c8f2a478fd81ff5a16a55