Modernize the ReviewGroupUserResource tests

Review Request #8457 - Created Oct. 12, 2016 and submitted

Barret Rennie
Review Board

The tests for the ReviewGroupUserResource were not using the
webapi_test_template decorator and were therefore hardcoding the
resource URL into each test docstring. All such instances have been
updated to use the decorator.

In addition, the test for getting DELETE links on a local site has been
udpated to use get_local_site and test fixtures.

Ran unit tests. Saw they all contained the correct URLs.

Review Bot
Barret Rennie
Christian Hammond
Barret Rennie
Review request changed

Status: Closed (submitted)

Change Summary:

Pushed to release-2.5.x (105db37)