Merge "Add NetworkSecurityUnitTests to tethering-mainline-presubmit" into main am: 9a03538a23

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3527510

Change-Id: If3884806ad628269f8c49362086b2824f39a7161
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>