Creating separate flags for Time/QuotaControllers.

TimeController and QuotaController flags don't have to be changed
atomically with other JobScheduler constants, so it's best to have them
be separate. I think it's best to have the QuotaController constant
change be atomic, which is why the flag is set up as a key/value pair.

Bug: 120793892
Test: atest android.provider.SettingsBackupTest
Test: atest com.android.server.job.controllers.ConnectivityControllerTest
Test: atest com.android.server.job.controllers.QuotaControllerTest
Test: atest com.android.server.job.controllers.StateControllerTest
Test: atest com.android.server.job.controllers.TimeControllerTest
Test: atest CtsJobSchedulerTestCases
Change-Id: I5bf20c37ea87a58bbcf4326f8e81cd6bea0a7c08