Merge "Downgrade list of subIds in NetworkCapabilities to @SystemApi" am: 87e0ab8905

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1652974

Change-Id: I4dc51bf65af853a7510586169caa12b083c2f94b
tree: 5b754d1ad005efde7430e6d421ed9c039cbb1a8b
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS
  7. TEST_MAPPING