tree 066144e4229786f31de4a482707863bb27dce28d
parent c066015fb78b890de5bd38eb043a58270edaeb0f
author Zhi Kun Liu <zhikunli@cn.ibm.com> 1397617701 -0500
committer Zhi Kun Liu <zhikunli@cn.ibm.com> 1397625363 -0500

move out ironic exception from common import

It will raise import error if ironic service is disabled
when run scenario test. This patch move ironic exception
module imporing into the function which uses it.

Relate change: I1260cceb2821400eb42959cb701e40ae449dd452

Change-Id: Ic41b9bd87af15ef6a9bded56ed1066c428847309