[virsh] Increase retries to 60 sec.
[virsh] Increase retries to 60 sec.

In some cases 200 seconds are not enough to boot up VM and get IP from
it. This patch increases the total time to 300 sec (5 minutes) to reduce
chance of failed deployment on hypervisors with slow disks.

Change-Id: Ie9cd1675f9d5a58b9d9b29a3756a10e11278ff30

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