ARTEMIS-1935: Close of openwire connection should closes all open sessions

This is my ammending to the last commit
I'm adding some extra verifications to the test
and I fixed a leak that already existed on the previous map

artemis-protocols/artemis-openwire-protocol/src/main/java/org/apache/activemq/artemis/core/protocol/openwire/OpenWireConnection.java

@@ -1013,6 +1013,7 @@ public class OpenWireConnection extends AbstractRemotingConnection implements Se
    public void removeSession(AMQConnectionContext context, SessionInfo info) throws Exception {
       AMQSession session = sessions.remove(info.getSessionId());
       if (session != null) {
+         sessionIdMap.remove(session.getCoreSession().getName());
          session.close();
       }
    }

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/openwire/SessionHandlingOpenWireTest.java

@@ -61,12 +61,22 @@ public class SessionHandlingOpenWireTest extends BasicOpenWireTest {
    public void testInternalSessionHandlingNoSessionClose() throws Exception {
       try (Connection conn = factory.createConnection()) {
          conn.start();
+         for (int i = 0; i < 100; i++) {
             Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
             Destination dest = createDestination(session,ActiveMQDestination.QUEUE_TYPE);
             sendMessages(session, dest, 1);
             MessageConsumer consumer = session.createConsumer(dest);
             Message m = consumer.receive(2000);
+            consumer.close();
             assertNotNull(m);
+
+            if (i % 2 == 1) {
+               // it will close only half of the sessions
+               // just to introduce error conditions
+               session.close();
+            }
+
+         }
       }
       assertFalse(AssertionLoggerHandler.findText("Client connection failed, clearing up resources for session"));
       assertFalse(AssertionLoggerHandler.findText("Cleared up resources for session"));