fixes leader-election e2e flakiness by relaxing timeout to 45s

Author: yue9944882

e2e/src/test/java/io/kubernetes/client/e2e/extended/leaderelection/LeaderElectorTest.java

@@ -27,13 +27,15 @@
 import java.net.HttpURLConnection;
 import java.time.Duration;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.BrokenBarrierException;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.CyclicBarrier;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
+import okhttp3.Protocol;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
@@ -73,6 +75,12 @@ public static Collection<Object[]> constructorFeeder() {
   public LeaderElectorTest(LockType lockType) {
     try {
       apiClient = ClientBuilder.defaultClient();
+      apiClient.setHttpClient(
+          apiClient
+              .getHttpClient()
+              .newBuilder()
+              .protocols(Arrays.asList(Protocol.HTTP_1_1))
+              .build());
     } catch (IOException ex) {
       throw new RuntimeException("Couldn't create ApiClient", ex);
     }
@@ -185,7 +193,7 @@ public void testMultiCandidateLeaderElection() throws Exception {
     Assert.assertEquals(1, stopBeingLeaderCount.get());
   }
 
-  @Test(timeout = 30000L)
+  @Test(timeout = 45000L)
   public void testLeaderGracefulShutdown() throws Exception {
     CountDownLatch startBeingLeader1 = new CountDownLatch(1);
     CountDownLatch stopBeingLeader1 = new CountDownLatch(1);