zhiyuan_cai 7ea5f89043 Catch exception when getting quota
Quota show command will list both the quotas of nova and cinder.
But if cinder service is not enabled, EndpointNotFound exception
will be raised and thus the command is broken. Catch this exception
so quotas of nova can be listed.

Change-Id: If2d2820675aa6a12e407d608fed846b21c953b2d
Closes-Bug: #1390507
2014-12-30 09:53:26 +08:00
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