Correct value of $public_bridge_name
Correct value of $public_bridge_name

This patch corrects value of $public_ovs_bridge_name in provision_demo.pp template.

Change-Id: I6fb10e3dfb97a5e1d4d191cce5649d09f8649ab9
Closes-bug: #1360107

fr34k8/packstack,openstack/packstack,xbezdick/packstack,stackforge/packstack,fr34k8/packstack,xbezdick/packstack,fr34k8/packstack,openstack/packstack,palmer159/openstack-test,palmer159/openstack-test,mahak/packstack,imcsk8/packstack,mahak/packstack,stackforge/packstack,palmer159/openstack-test,openstack/packstack,imcsk8/packstack,imcsk8/packstack,mahak/packstack,xbezdick/packstack,stackforge/packstack