Instance show paused state but in fact pause action do not implemented on PowerVM

[Qing Xin Meng]

The PowerVM don't supported pause action now.
But after running 'nova pause instance-name', the instance state changed to PAUSED, it's a problem, the state should be still ACTIVE.

+--------------------------------------+----------------------------+--------+------------------+
| ID | Name | Status | Networks |
+--------------------------------------+----------------------------+--------+------------------+
| 42687c37-b0b4-4cf9-ada5-a67688add4be | m2 | PAUSED | mqx_net=55.0.0.2 |

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/37482

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/37482
Committed: http://github.com/openstack/nova/commit/e16260bef0abb8dba419c168245664d3baf09ab7
Submitter: Jenkins
Branch: master

commit e16260bef0abb8dba419c168245664d3baf09ab7
Author: QingXin Meng <email address hidden>
Date: Thu Jul 11 18:14:28 2013 -0700

    Unimplemented pause should not change vm state on PowerVM

    The instance of PowerVM does not support pause, but
    after pause the instance, the state change to PAUSED,
    it's unreasonable.

    Change-Id: I4fb184388c37ea8708cdacc173dc1b2dbd4d1597
    Fixes: bug #1202082