Fixes SplitBrainTest start issues (hazelcast#19191)

SplitBrainStatus is set by a single thread at the hazelcast instance
start in an async manner. Therefore, we are not sure that a the
status is set when the test starts.

Adding an eventually check at the start so that we make sure we
have the min-size cluster for all split brain protections before
we actually split the cluster

fixes hazelcast#18950
fixes hazelcast#18777
fixes hazelcast#18766
fixes hazelcast#18765
fixes hazelcast#18764
fixes hazelcast#18930

(cherry picked from commit a33a1a7)

hazelcast/src/test/java/com/hazelcast/splitbrainprotection/AbstractSplitBrainProtectionTest.java

@@ -222,7 +222,7 @@ protected static void initCluster(Config config, TestHazelcastInstanceFactory fa
             config.addPNCounterConfig(newPNCounterConfig(splitBrainProtectionOn, splitBrainProtectionName));
         }
 
-        cluster.createFiveMemberCluster(config);
+        cluster.createFiveMemberCluster(config, splitBrainProtectionNames);
         initData(types);
         cluster.splitFiveMembersThreeAndTwo(splitBrainProtectionNames);
     }

hazelcast/src/test/java/com/hazelcast/splitbrainprotection/PartitionedCluster.java

@@ -74,8 +74,12 @@ public HazelcastInstance getInstance(int index) {
         return instance[index];
     }
 
-    public void createFiveMemberCluster(Config config) {
+    public void createFiveMemberCluster(Config config, String[] splitBrainProtectionIds) {
         createInstances(config);
+        verifySplitBrainProtectionsPresentEventually(SUCCESSFUL_SPLIT_BRAIN_PROTECTION_TEST_NAME);
+        for (String splitBrainProtectionId : splitBrainProtectionIds) {
+            verifySplitBrainProtectionsPresentEventually(splitBrainProtectionId);
+        }
     }
 
     public void splitFiveMembersThreeAndTwo(String... splitBrainProtectionIds) {
@@ -133,6 +137,14 @@ private void splitCluster() {
         closeConnectionBetween(instance[4], instance[0]);
     }
 
+    private void verifySplitBrainProtectionsPresentEventually(String splitBrainProtectionId) {
+        assertSplitBrainProtectionIsPresentEventually(instance[0], splitBrainProtectionId);
+        assertSplitBrainProtectionIsPresentEventually(instance[1], splitBrainProtectionId);
+        assertSplitBrainProtectionIsPresentEventually(instance[2], splitBrainProtectionId);
+        assertSplitBrainProtectionIsPresentEventually(instance[3], splitBrainProtectionId);
+        assertSplitBrainProtectionIsPresentEventually(instance[4], splitBrainProtectionId);
+    }
+
     private void verifySplitBrainProtections(String splitBrainProtectionId) {
         assertSplitBrainProtectionIsPresentEventually(instance[0], splitBrainProtectionId);
         assertSplitBrainProtectionIsPresentEventually(instance[1], splitBrainProtectionId);