MINOR: Disable JDK 11 and 17 tests on PRs (apache#16051)

Signed-off-by: Greg Harris <greg.harris@aiven.io>
Reviewers: Justine Olshan <jolshan@confluent.io>, David Arthur <mumrah@gmail.com>, Ismael Juma <ismael@juma.me.uk>, Luke Chen <showuon@gmail.com>, Chia-Ping Tsai <chia7712@gmail.com>

Jenkinsfile

@@ -36,6 +36,12 @@ def doTest(env, target = "test") {
   junit '**/build/test-results/**/TEST-*.xml'
 }
 
+def runTestOnDevBranch(env) {
+  if (!isChangeRequest(env)) {
+    doTest(env)
+  }
+}
+
 def doStreamsArchetype() {
   echo 'Verify that Kafka Streams archetype compiles'
 
@@ -132,7 +138,7 @@ pipeline {
           }
           steps {
             doValidation()
-            doTest(env)
+            runTestOnDevBranch(env)
             echo 'Skipping Kafka Streams archetype test for Java 11'
           }
         }
@@ -151,7 +157,7 @@ pipeline {
           }
           steps {
             doValidation()
-            doTest(env)
+            runTestOnDevBranch(env)
             echo 'Skipping Kafka Streams archetype test for Java 17'
           }
         }