Merge "Move the DscpPolicy status constants and IntDef to NetworkAgent." am: 697c18376b am: 41f94ec8a1

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

Change-Id: I7160f2dcab65e080c2fb6e599f72f9b20e6d9a7d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>