Updating app get display to display 'target_instances'
Updating app get display to display 'target_instances'

An app may be specified to be scaled using 'app scale' command.
This patch will display the requested target number
of instances for an app, if a scaling target is present.

Change-Id: If3a32bf15131c37c2f495bdb208c095248b82a70
Depends-On: If3e214064e107726ebbe1040ffee35a84ed32971
Closes-Bug: #1545837

stackforge/python-solumclient,stackforge/python-solumclient,openstack/python-solumclient