[SPARK-31780][K8S][TESTS] Add R test tag to exclude R K8s image building and test

### What changes were proposed in this pull request?

This PR aims to skip R image building and one R test during integration tests by using `--exclude-tags r`.

### Why are the changes needed?

We have only one R integration test case, `Run SparkR on simple dataframe.R example`, for submission test coverage. Since this is rarely changed, we can skip this and save the efforts required for building the whole R image and running the single test.
```
KubernetesSuite:
...
- Run SparkR on simple dataframe.R example
Run completed in 10 minutes, 20 seconds.
Total number of tests run: 20
```

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

Pass the K8S integration test and do the following manually. (Note that R test is skipped)
```
$ resource-managers/kubernetes/integration-tests/dev/dev-run-integration-tests.sh --deploy-mode docker-for-desktop --exclude-tags r --spark-tgz $PWD/spark-*.tgz
...
KubernetesSuite:
- Run SparkPi with no resources
- Run SparkPi with a very long application name.
- Use SparkLauncher.NO_RESOURCE
- Run SparkPi with a master URL without a scheme.
- Run SparkPi with an argument.
- Run SparkPi with custom labels, annotations, and environment variables.
- All pods have the same service account by default
- Run extraJVMOptions check on driver
- Run SparkRemoteFileTest using a remote data file
- Run SparkPi with env and mount secrets.
- Run PySpark on simple pi.py example
- Run PySpark with Python2 to test a pyfiles example
- Run PySpark with Python3 to test a pyfiles example
- Run PySpark with memory customization
- Run in client mode.
- Start pod creation from template
- PVs with local storage
- Launcher client dependencies
- Test basic decommissioning
Run completed in 10 minutes, 23 seconds.
Total number of tests run: 19
Suites: completed 2, aborted 0
Tests: succeeded 19, failed 0, canceled 0, ignored 0, pending 0
All tests passed.
```

Closes #28594 from dongjoon-hyun/SPARK-31780.

Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

Author: dongjoon-hyun

resource-managers/kubernetes/integration-tests/pom.xml

@@ -121,6 +121,9 @@
 
                 <argument>--spark-tgz</argument>
                 <argument>${spark.kubernetes.test.sparkTgz}</argument>
+
+                <argument>--test-exclude-tags</argument>
+                <argument>"${test.exclude.tags}"</argument>
               </arguments>
             </configuration>
           </execution>

resource-managers/kubernetes/integration-tests/scripts/setup-integration-test-env.sh

@@ -26,6 +26,7 @@ IMAGE_TAG="N/A"
 JAVA_IMAGE_TAG="8-jre-slim"
 SPARK_TGZ="N/A"
 MVN="$TEST_ROOT_DIR/build/mvn"
+EXCLUDE_TAGS=""
 
 # Parse arguments
 while (( "$#" )); do
@@ -58,6 +59,10 @@ while (( "$#" )); do
       SPARK_TGZ="$2"
       shift
       ;;
+    --test-exclude-tags)
+      EXCLUDE_TAGS="$2"
+      shift
+      ;;
     *)
       break
       ;;
@@ -99,7 +104,10 @@ then
   LANGUAGE_BINDING_BUILD_ARGS="-p $DOCKER_FILE_BASE_PATH/bindings/python/Dockerfile"
 
   # Build SparkR image
-  LANGUAGE_BINDING_BUILD_ARGS="$LANGUAGE_BINDING_BUILD_ARGS -R $DOCKER_FILE_BASE_PATH/bindings/R/Dockerfile"
+  tags=(${EXCLUDE_TAGS//,/ })
+  if [[ ! ${tags[@]} =~ "r" ]]; then
+    LANGUAGE_BINDING_BUILD_ARGS="$LANGUAGE_BINDING_BUILD_ARGS -R $DOCKER_FILE_BASE_PATH/bindings/R/Dockerfile"
+  fi
 
   # Unset SPARK_HOME to let the docker-image-tool script detect SPARK_HOME. Otherwise, it cannot
   # indicate the unpacked directory as its home. See SPARK-28550.

resource-managers/kubernetes/integration-tests/src/test/scala/org/apache/spark/deploy/k8s/integrationtest/KubernetesSuite.scala

@@ -476,6 +476,7 @@ class KubernetesSuite extends SparkFunSuite
 
 private[spark] object KubernetesSuite {
   val k8sTestTag = Tag("k8s")
+  val rTestTag = Tag("r")
   val MinikubeTag = Tag("minikube")
   val SPARK_PI_MAIN_CLASS: String = "org.apache.spark.examples.SparkPi"
   val SPARK_DFS_READ_WRITE_TEST = "org.apache.spark.examples.DFSReadWriteTest"

resource-managers/kubernetes/integration-tests/src/test/scala/org/apache/spark/deploy/k8s/integrationtest/RTestsSuite.scala

@@ -19,9 +19,9 @@ package org.apache.spark.deploy.k8s.integrationtest
 private[spark] trait RTestsSuite { k8sSuite: KubernetesSuite =>
 
   import RTestsSuite._
-  import KubernetesSuite.k8sTestTag
+  import KubernetesSuite.{k8sTestTag, rTestTag}
 
-  test("Run SparkR on simple dataframe.R example", k8sTestTag) {
+  test("Run SparkR on simple dataframe.R example", k8sTestTag, rTestTag) {
     sparkAppConf.set("spark.kubernetes.container.image", rImage)
     runSparkApplicationAndVerifyCompletion(
       appResource = SPARK_R_DATAFRAME_TEST,