0.8dev: After `RegressionTestRev5785`, the user remained logged out, so any functional tests executed after it would fail if they expected a logged-in user.

Since !AccountManagerPlugin is used in the test environment, we must use the `login` method that accounts for the forms-based login.


git-svn-id: https://svn.apache.org/repos/asf/bloodhound/trunk@1542165 13f79535-47bb-0310-9956-ffa450edef68