This change reverts having is_admin_project default to False [0]
since we currently need to have it revert to True in order to
account for anyone who has not configured an admin project. This
will be truely fixed at a later date.
This also adds comments from another change [1] which clarifies
the for why this should not be changed at this moment.
[0] https://review.openstack.org/#/c/438035/
[1] https://review.openstack.org/#/c/257636/
Partial-Bug: 968696
Change-Id: I039bfc8a41d43634ebad545725b9188a82afb990
Co-Authored-By: Adam Young <ayoung@redhat.com>
Co-Authored-By: Matthew Edmonds <edmondsw@us.ibm.com>