Fix the communication issue between control and compute nodes

Fix the communication issue between control and compute nodes

* The compute and control nodes are stacked in parallel resulting in the
compute nodes stacking before the control node itself, so the hypervisor-list does
not feature the compute nodes.

* This Patch disabled the firewall in control node after stacking top enable the compute nodes
  reach the required ports and the control node to recognize the other hypervisors available.

Change-Id: Ibc6736a858fcafb13fe4e6f30c076176e470614d
Signed-off-by: gvrangan <venkatrangang@hcl.com>