Expose ConnectivitySettingsManager as module-lib API am: 9443095517

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1654013

Change-Id: I6b53ced3ed523f984dde3c5b24cd53f832284da0
tree: dbd828ad5078fdaa9348750f6e8fa82e9d99caa1
  1. framework/
  2. service/
  3. OWNERS
  4. TEST_MAPPING