[automerger skipped] Merge "DO NOT MERGE: Add a stub class for IpSecService." into sc-mainline-prod am: c35d99328b -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/16826533

Change-Id: I17dd6e0cd9a11457d0b471e0fcc0a46c99c86e59