Frameworks: Mark tests

Add @Ignore and @Test to make Errorprone happy.

Bug: 72076216
Test: m javac-check RUN_ERROR_PRONE=true
Test: atest ConnectivityServiceTest
Test: atest WifiManagerTest
Change-Id: Id2423c545eccaa768203faf86e14d0a558d927cd

tests/net/java/com/android/server/ConnectivityServiceTest.java

@@ -318,6 +318,7 @@ public class ConnectivityServiceTest {
 
     // This test has an inherent race condition in it, and cannot be enabled for continuous testing
     // or presubmit tests. It is kept for manual runs and documentation purposes.
+    @Ignore
     public void verifyThatNotWaitingForIdleCausesRaceConditions() {
         // Bring up a network that we can use to send messages to ConnectivityService.
         ConditionVariable cv = waitForConnectivityBroadcasts(1);