Comment 9 for bug 1566562

Reviewed: https://review.opencontrail.org/19094
Committed: http://github.org/Juniper/contrail-fabric-utils/commit/8c20a8fda502e588f0e2db11f1863c632b116970
Submitter: Zuul
Branch: master

commit 8c20a8fda502e588f0e2db11f1863c632b116970
Author: Ignatious Johnson Christopher <email address hidden>
Date: Wed Apr 6 04:14:18 2016 +0000

Initialize hostnames list before appending it in
get_all_hostnames function.
Expose the config_nova flag to setup_without_openstack task
add_reserved_ports task should check for the declatation of
openstack node and execute, if not declared, the task will execute
in the host poulated in env.host_string

Change-Id: I4626377e310f194fee6441f338b68dbe967750e6
Closes-Bug: 1566562