Migrate ICaptivePortal to stable AIDL

Also add required API for the captive portal app to stop using hidden
members.

Test: atest FrameworksNetTests NetworkStackTests
Bug: 112869080
Merged-In: I62b457e709fa199822bb8f80b0eab990be4ded93
Change-Id: I62b457e709fa199822bb8f80b0eab990be4ded93
1 file changed
tree: 8b0fa7b7c7b0fe7fd93bb77abcf5fe63d3855a59
  1. core/
  2. services/
  3. tests/