Fix Default reviewers not added to review request for committed change

Review Request #7691 — Created Oct. 10, 2015 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x

Reviewers

Create a review request for a committed change via the "New Review Request" page. Default reviewer is not shown. The season of this bug is because the code of adding default reviewer is only called when posting change via RBtools.
To solve this, add default reviewers when creating a review request from a committed change

  1. Create a review request from "New Review Request" web UI, the default reviewer was shown.
  2. Run all the unit tests, and pass all the tests.