ARTEMIS-3803 Fix first NetworkHealthCheck execution

The NetworkHealthCheck hasn't to execute the default command if a custom
command is defined.

artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/ActiveMQServerImpl.java

@@ -582,11 +582,11 @@ public final synchronized void start() throws Exception {
    public void reloadNetworkHealthCheck() {
       networkHealthCheck.setTimeUnit(TimeUnit.MILLISECONDS).setPeriod(configuration.getNetworkCheckPeriod()).
          setNetworkTimeout(configuration.getNetworkCheckTimeout()).
-         parseAddressList(configuration.getNetworkCheckList()).
-         parseURIList(configuration.getNetworkCheckURLList()).
          setNICName(configuration.getNetworkCheckNIC()).
          setIpv4Command(configuration.getNetworkCheckPingCommand()).
-         setIpv6Command(configuration.getNetworkCheckPing6Command());
+         setIpv6Command(configuration.getNetworkCheckPing6Command()).
+         parseAddressList(configuration.getNetworkCheckList()).
+         parseURIList(configuration.getNetworkCheckURLList());
 
       networkHealthCheck.addComponent(networkCheckMonitor);
    }

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/server/NetworkHealthCheckTest.java

@@ -0,0 +1,73 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.activemq.artemis.tests.integration.server;
+
+import org.apache.activemq.artemis.core.config.Configuration;
+import org.apache.activemq.artemis.core.server.ActiveMQServer;
+import org.apache.activemq.artemis.core.server.NetworkHealthCheck;
+import org.apache.activemq.artemis.logs.AssertionLoggerHandler;
+import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
+import org.jboss.logmanager.Logger;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.util.logging.Level;
+
+public class NetworkHealthCheckTest extends ActiveMQTestBase {
+
+   private static final Logger logManager = org.jboss.logmanager.Logger.getLogger(NetworkHealthCheck.class.getPackage().getName());
+   private static java.util.logging.Level previousLevel = logManager.getLevel();
+
+   @BeforeClass
+   public static void prepareLogger() {
+      logManager.setLevel(Level.ALL);
+      AssertionLoggerHandler.startCapture();
+   }
+
+   @AfterClass
+   public static void clearLogger() {
+      AssertionLoggerHandler.stopCapture();
+      logManager.setLevel(previousLevel);
+   }
+
+
+   @Test
+   public void testCustomIpv4Command() throws Exception {
+      final int checkingTimeout = 1;
+      final String checkingHost = "10.0.0.1";
+      final String customIpv4Command = "DUMMYPING %d %s";
+
+
+      Configuration config = createBasicConfig()
+         .setNetworkCheckTimeout(checkingTimeout)
+         .setNetworkCheckList(checkingHost)
+         .setNetworkCheckPingCommand(customIpv4Command);
+
+      ActiveMQServer server = createServer(false, config);
+
+      server.start();
+      try {
+         Assert.assertTrue(AssertionLoggerHandler.findText(String.format(customIpv4Command, checkingTimeout, checkingHost)));
+         Assert.assertFalse(AssertionLoggerHandler.findText(String.format(NetworkHealthCheck.IPV4_DEFAULT_COMMAND, checkingTimeout, checkingHost)));
+      } finally {
+         server.stop();
+      }
+   }
+}