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: I67c703e3f7aa9d5787f032a79ed62e45412baf4f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>