[KYUUBI #6866][FOLLOWUP] Prevent register gauge conflicts if both thrift binary SSL and thrift http SSL enabled

### Why are the changes needed?

Followup for #6866
It would throw exception if both thrift binary SSL and thrift http SSL enabled

### How was this patch tested?

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #6872 from turboFei/duplicate_gauge.

Closes #6866

ea35676 [Wang, Fei] prevent conflicts
982f175 [Wang, Fei] conflicts

Authored-by: Wang, Fei <[email protected]>
Signed-off-by: Wang, Fei <[email protected]>

Author: turboFei

kyuubi-metrics/src/main/scala/org/apache/kyuubi/metrics/MetricsSystem.scala

@@ -58,6 +58,10 @@ class MetricsSystem extends CompositeService("MetricsSystem") {
     meter.mark(value)
   }
 
+  def getGauge[T](name: String): Option[Gauge[T]] = {
+    Option(registry.gauge(name))
+  }
+
   def registerGauge[T](name: String, value: => T, default: T): Unit = {
     registry.register(
       MetricRegistry.name(name),

kyuubi-server/src/main/scala/org/apache/kyuubi/util/SSLUtils.scala

@@ -56,13 +56,15 @@ object SSLUtils extends Logging {
         keyStorePath.get,
         keyStorePassword.get,
         keyStoreType).foreach { expiration =>
-        info(s"Thrift SSL Serve KeyStore ${keyStorePath.get} will expire at:" +
+        info(s"Thrift SSL Server KeyStore ${keyStorePath.get} will expire at:" +
           s" ${Utils.getDateFromTimestamp(expiration)}")
         MetricsSystem.tracing { ms =>
-          ms.registerGauge(
-            MetricsConstants.THRIFT_SSL_CERT_EXPIRATION,
-            expiration - System.currentTimeMillis(),
-            0L)
+          if (ms.getGauge(MetricsConstants.THRIFT_SSL_CERT_EXPIRATION).isEmpty) {
+            ms.registerGauge(
+              MetricsConstants.THRIFT_SSL_CERT_EXPIRATION,
+              expiration - System.currentTimeMillis(),
+              0L)
+          }
         }
       }
     }