[KYUUBI #3353] Backport HIVE-21899 - Utils.getCanonicalHostName() may return IP address depending on DNS infra

### _Why are the changes needed?_

Fix https://github.com/apache/incubator-kyuubi/issues/3352

It's a regression issue, that came from upgrading from Hive 2.3 to Hive 3.1.

### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

- [ ] Add screenshots for manual tests if appropriate

- [x] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #3353 from pan3793/HIVE-21899.

Closes #3353

85a25c8e [Cheng Pan] Backport HIVE-21899 - Utils.getCanonicalHostName() may return IP address depending on DNS infra

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>

kyuubi-hive-jdbc/src/main/java/org/apache/kyuubi/jdbc/hive/Utils.java

@@ -442,7 +442,13 @@ public class Utils {
    */
   public static String getCanonicalHostName(String hostName) {
     try {
-      return InetAddress.getByName(hostName).getCanonicalHostName();
+      InetAddress addr = InetAddress.getByName(hostName);
+      String canonicalHostname = addr.getCanonicalHostName();
+      if (canonicalHostname.equals(addr.getHostAddress())) {
+        return hostName;
+      } else {
+        return canonicalHostname;
+      }
     } catch (UnknownHostException exception) {
       LOG.warn("Could not retrieve canonical hostname for " + hostName, exception);
       return hostName;