1341 Removed dependency on Firebase for android_alarm_manager example (cla: yes)

1342 add driver test command to cirrus (cla: yes)

1343 [firebase_auth] fix error code in doc of createUserWithEmailAndPassword() (cla: yes)

1344 [shared_preferences] Update shared_preferences CHANGELOG for release (cla: yes)

1345 [cloud_firestore] fix NoSuchMethodError regression and add test (cla: yes)

1346 [cloud_functions] add a driver test (cla: yes)

1348 [firebase_auth] Add a driver test (cla: yes)

1350 [google_maps_flutter] add My location button enabled option (cla: yes)

1352 [google_maps_flutter] Add method getVisibleRegion (cla: yes)