Updated openstack/openstack
Project: openstack/python-heatclient  40b8bce40be59d090e948ef83bae137f88d8b049
null
Using common methods from oslo cliutils

Synchronize the cliutils from oslo to heatclient and use
the common methods.

used common methods:
+arg
+env
+print_list

partially implements blueprint common-client-library-2

Change-Id: If79d58794257325a47b9938a172a87097fc93e1b