Merge "Move the DscpPolicy status constants and IntDef to NetworkAgent." am: 697c18376b am: f0ca0a38bb am: 2462ba2355

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2042264

Change-Id: Icf2147c6ca1444ed0e5dc92097bbff20521d4aa7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>