Updated openstack/openstack
Project: openstack/python-openstackclient  ab5416a385f3597c2a63b5518f20dce7de75efc4

Add support to list compute extensions

Since novaclient has support to list extensions, we should add
some of the logic to our list extensions command.

Closes-Bug: #1337684
Change-Id: I3074225780142df265a34add03e60c0f7c64c711