According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
Let's switch to stestr as other projects have already moved to it.
[1] https://etherpad.openstack.org/p/YVR-python-pti
Change-Id: I5e57994077795bcc25861a081ef114fa97e01bef
This patch includes:
1. client base
2. v1 resource type list client
Patial blueprint: openstack-client-search-initial-plugin
Change-Id: Ife57592cdff80cf6fa440dd2daba9daceefd3a11