Fix output public_ip  in the coreos.yaml
Fix output public_ip  in the coreos.yaml

Correctly parsing the output IP address from spun up stack
http://pasteboard.co/ekdltN4x1.png
http://pasteboard.co/ekaTgXPNH.png
http://pasteboard.co/ekjozmwpN.png
Change-Id: I565547f86f8d0260f5b8ac79d9539e65cfa2c553
Closes-Bug: #1617867

openstack/solum,stackforge/solum,openstack/solum,stackforge/solum