move PRIVATE/SHARED/MANDATORY/OPTIONAL/{LOAD,IGNORE}_ON_* into core headers am: 10da6d4e61 am: 32fdebb277

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2777124

Change-Id: I92dfc4cf1fe996f74981cb7bced0f3cf9f68808f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>