1.0.3dev: `FunctionalTestEnvironment.add_user` calls the `session add` TracAdmin command so that the known users cache is invalidated.
1.0.3dev: `FunctionalTestEnvironment.add_user` calls the `session add` TracAdmin command so that the known users cache is invalidated.

This change should have been included in [13479].


git-svn-id: 3bd1c7f5b9365705bff4dd56977498491f5ac132@13591 af82e41b-90c4-0310-8c96-b1721e28e2e2

exocad/exotrac,exocad/exotrac,exocad/exotrac,exocad/exotrac