Wrap cli.run() to try/except
Wrap cli.run() to try/except

To have better visibility why ansible failed this patch adds try/except
to be able to understand what went wrong from exception.

Change-Id: I4fdba0ccc1ef863c2c303c4ae73f8cd0c205cdb5

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared