SDC-13016. Include shuffle service enabled in defaults.

Change-Id: I3177c3a32ccfcb8426c60ae8e9bdc1cb02f3a242
Reviewed-on: https://review.streamsets.net/c/datacollector/+/27883
Reviewed-by: Junko Urata <junko@streamsets.com>

container/src/main/java/com/streamsets/datacollector/restapi/PipelineStoreResource.java

@@ -1786,6 +1786,7 @@ private void setStreamingModeDefaults(PipelineConfiguration pipelineConfig) {
         .add(ImmutableMap.of("key", "spark.executor.memory", "value","2G"))
         .add(ImmutableMap.of("key", "spark.executor.cores", "value","1"))
         .add(ImmutableMap.of("key", "spark.dynamicAllocation.enabled", "value", "true"))
+        .add(ImmutableMap.of("key", "spark.shuffle.service.enabled", "value", "true"))
         .add(ImmutableMap.of("key", "spark.dynamicAllocation.minExecutors", "value", "1"))
         .build();
     Map<String, Config> replacementConfigs = ImmutableMap.<String, Config>builder()