Add more template_fields to RunPipelineJobOperator (#50220)

* issue #50206: add more template_fields to RunPipelineJobOperator

the fields "template_path", "pipeline_root", "parameter_values", "service_account" where added to allow jinja templating these args.

* add new template_fields to unit tests

* rollback templating tests for wrong operator

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Co-authored-by: feri <feri@DESKTOP-QSATAT0.speedport.ip>

Author: ferenc-hechler

providers/google/src/airflow/providers/google/cloud/operators/vertex_ai/pipeline_job.py

@@ -112,6 +112,10 @@ class RunPipelineJobOperator(GoogleCloudBaseOperator):
         "project_id",
         "input_artifacts",
         "impersonation_chain",
+        "template_path",
+        "pipeline_root",
+        "parameter_values",
+        "service_account",
     ]
     operator_extra_links = (VertexAIPipelineJobLink(),)