Add 'main' param to template_fields in DataprocSubmitPySparkJobOperator (#9154)

Author: kaxil

airflow/providers/google/cloud/operators/dataproc.py

@@ -1242,7 +1242,7 @@ class DataprocSubmitPySparkJobOperator(DataprocJobBaseOperator):
     Start a PySpark Job on a Cloud DataProc cluster.
 
     :param main: [Required] The Hadoop Compatible Filesystem (HCFS) URI of the main
-            Python file to use as the driver. Must be a .py file.
+            Python file to use as the driver. Must be a .py file. (templated)
     :type main: str
     :param arguments: Arguments for the job. (templated)
     :type arguments: list
@@ -1256,7 +1256,7 @@ class DataprocSubmitPySparkJobOperator(DataprocJobBaseOperator):
     :type pyfiles: list
     """
 
-    template_fields = ['arguments', 'job_name', 'cluster_name',
+    template_fields = ['main', 'arguments', 'job_name', 'cluster_name',
                        'region', 'dataproc_jars', 'dataproc_properties']
     ui_color = '#0273d4'
     job_type = 'pyspark_job'