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

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

Change-Id: I81893df9f327abb84f1561b2b33027a2d23a4d65
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>