Fix wait_for_compute to work for modified compute host name
Fix wait_for_compute to work for modified compute host name

When we change the name of compute host then devstack is breaking
because it is using default host name from host.

How to change compute host name in local.conf
[[post-config|$NOVA_CONF]]
[DEFAULT]
host = foo

Change-Id: I4d4392f1f58f0431b10764610668565af88d392f
Signed-off-by: Prabhat Ranjan <c344f71639b4116cef593a1a39332a72ae508236@in.ibm.com>

noironetworks/devstack,openstack-dev/devstack,openstack-dev/devstack,dtroyer/devstack,group-policy/devstack,nawawi/openstack,nawawi/openstack,dtroyer/devstack,noironetworks/devstack,group-policy/devstack