Merge "[NFCT.TETHER.2] Migrate tetherOffloadRuleAdd from netd to mainline" am: 6bc18e6d2c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1536562

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I5a1d3871bf767043cc2845811aef33fc838ac017