This change removes Tuskar support from the following commands:
- openstack overcloud deploy
- openstack overcloud node delete
- openstack overcloud update stack
This removal is due to the limiting nature of Tuskar, we can achieve everything
we need and more without it. The change also removes python-tuskarclient from
the requirements and if the Tuskar CLI (openstack management commands) is
required it will need to be installed independently.
This change is dependant on the Tuskar examples being removed from the
documentation. These are removed in the dependant change ID below.
Depends-On: I2d4aa114156c5bafb003e6a67862ed6d1449fd98
Change-Id: Ic6fd4568054fe91b8fc898728022a7d7ed8cf3cf
6abf557aa1