Install instack-create-overcloudrc
Install instack-create-overcloudrc

The new script wasn't included in setup.cfg so it won't get
installed properly.

Change-Id: Ic2cc1182a28ce4bc136e2eea02f1c32f63241bd0

bcrochet/instack-undercloud,bcrochet/instack-undercloud,dpkshetty/instack-undercloud,rdo-management/instack-undercloud,eprasad/instack-undercloud,dpkshetty/instack-undercloud,dmsimard/instack-undercloud,rdo-management/instack-undercloud,dmsimard/instack-undercloud,eprasad/instack-undercloud