gbmcweb: enable gbmcweb-google-common-plugins Enable the google common plugins for gbmcweb by default. Tested: b/316193729#comment4 Google-Bug-Id: b/316193729 Change-Id: I9716848acf6b0780d91fc22e2f5ce9284d740fbf Signed-off-by: Hao Jiang <jianghao@google.com>