Merge "Add tests for PAC proxies." am: 5e76b40973

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1729152

Change-Id: I4720b4aaec737b4046e9c72c15bdd732b5f7dd31
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>