Run '--packages' only with default cuda11 jar (#10279)

* Run '--packages' only with default cuda11 jar

As '--packages' only works on the default cuda11 jar, it does not support classifier parameter,
refer to issue: https://issues.apache.org/jira/browse/SPARK-20075

We can not specify classifier jar to run plugin tests with '--packages', see below error log:
    Exception in thread "main" java.lang.IllegalArgumentException:
        requirement failed: Provided Maven Coordinates must be in the form 'groupId:artifactId:version'.
        The coordinate provided is: com.nvidia:rapids-4-spark_2.12:23.12.0:jar:cuda12

Signed-off-by: Tim Liu <timl@nvidia.com>

* Add description why need run packages test with ==cuda11 case

---------

Signed-off-by: Tim Liu <timl@nvidia.com>

jenkins/spark-tests.sh

@@ -304,10 +304,17 @@ if [[ $TEST_MODE == "DEFAULT" ]]; then
   PYSP_TEST_spark_shuffle_manager=com.nvidia.spark.rapids.${SHUFFLE_SPARK_SHIM}.RapidsShuffleManager \
     ./run_pyspark_from_build.sh
 
-  SPARK_SHELL_SMOKE_TEST=1 \
-  PYSP_TEST_spark_jars_packages=com.nvidia:rapids-4-spark_${SCALA_BINARY_VER}:${PROJECT_VER} \
-  PYSP_TEST_spark_jars_repositories=${PROJECT_REPO} \
-    ./run_pyspark_from_build.sh
+  # As '--packages' only works on the default cuda11 jar, it does not support classifiers
+  # refer to issue : https://issues.apache.org/jira/browse/SPARK-20075
+  # "$CLASSIFIER" == ''" is usally for the case running by developers,
+  # while "$CLASSIFIER" == "cuda11" is for the case running on CI.
+  # We expect to run packages test for both cases
+  if [[ "$CLASSIFIER" == "" || "$CLASSIFIER" == "cuda11" ]]; then
+    SPARK_SHELL_SMOKE_TEST=1 \
+    PYSP_TEST_spark_jars_packages=com.nvidia:rapids-4-spark_${SCALA_BINARY_VER}:${PROJECT_VER} \
+    PYSP_TEST_spark_jars_repositories=${PROJECT_REPO} \
+      ./run_pyspark_from_build.sh
+  if
 
   # ParquetCachedBatchSerializer cache_test
   PYSP_TEST_spark_sql_cache_serializer=com.nvidia.spark.ParquetCachedBatchSerializer \