Run for post commit

Summary:
We want to migrate the android TD runs in postcommit which are schedule type master actually. But they pick up on jobs with run_on_post_commit set to True.

See:
https://www.internalfb.com/sandcastle/workflow/1184446702001613812

https://www.internalfb.com/sandcastle/workflow/54043195543925018

There isnt a specific logic for master/postcommit schedule type. The existing one for aloha just runs everything using the build directive.

TODO: In the next diff i ll create the call for post commit in the fbandroid-post-commit job

Reviewed By: jiawei-lyu

Differential Revision: D58430298

fbshipit-source-id: 03233d7aa53b6b897501b0d49033e4b3dcc87794

td_util/src/schedules.rs

@@ -51,6 +51,7 @@ pub enum ScheduleType {
     Testwarden,
     Greenwarden,
     Disabled,
+    Master,
 }
 
 impl ScheduleType {