Modify oauth1 tests to use generated keystone token in a call

Expanded on a test to check roles section for returned token too,
as well as using the returned token to issue a request (create user).

Change-Id: Id3e88e98aa69c0a353ca54a3d4a29cdade34939a
upgrade to oslo.config 1.2 final

Fixes-Bug: 1182861
Change-Id: I75ffc4a572d14488d19491a38742d6920951c171
Merge "upgrade to oslo.config 1.2 final"
Merge "Modify oauth1 tests to use generated keystone token in a call"