Don't create user in AuthManagerTest dataProvider
Creating users involves database access and the test
database isn't fully setup yet when data providers run.
In this particular test / data provider, all that is needed
is the user name so we can just set that w/o creating
the user in the data provider. The user gets created during
the test. (after the test database is setup)
also $id set in $id = $user->getId() was unused and was the
specific code that involved making a database connection.
Change-Id: I1685dfdd6cfc60cd2c59a4d9de95bcbbaba5e153