[automerger skipped] Convert ProcNetTest to JUnit4. am: d0a655296a -s ours

am skip reason: Merged-In Ic1fc41c1ca0c30b6b7350c413d710d959b9a5013 with SHA-1 9ae344b81a is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/24686311

Change-Id: I9d33519bb4e0c7d6ef0bb2e00d9dcbe428c2843f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>