* changes:
DO NOT MERGE: IpConnectivityMetrics: rate limit ApfProgramEvents
DO NOT MERGE: TokenBucket for rate-limiting and throttling
DO NOT MERGE: IpConnectivityMetrics reads buffer size in settings
DO NOT MERGE: CaptivePortalLogin: set mixed content policy to compatibility.
DO NOT MERGE: Add IP conn metrics to dumpsys and bug reports
DO NOT MERGE: IpConnectivity metrics: add version number