Add constants for ConnectivityManager.BLOCKED_REASON_*.

Bug: 165835257
Test: atest CtsNetTestCases:android.net.cts.ConnectivityManagerTest
Test: atest CtsNetTestCasesLatestSdk:android.net.cts.ConnectivityManagerTest
Change-Id: Ibb09ec991d328522b695c7a992f365bd24f4f043
1 file changed