Update tiles.xml files used with tests to reference tiles-config_3_0 instead of tiles-config_2_1 DTD. Prior to this commit tiles based tests would fail when building offline or behind a proxy server.
Update tiles.xml files used with tests to reference tiles-config_3_0 instead of tiles-config_2_1 DTD. Prior to this commit tiles based tests would fail when building offline or behind a proxy server.