show only submitted salary_structure and leave_policy in Employee Grade app (#15434)

* update staff plan when add or delete job-opening

* Update job_opening.py

* filter default_salary_structure and default_leave_policy

* merge
diff --git a/.gitignore b/.gitignore
index 68272c7..62d6129 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 *.swo
 __pycache__
 *~
+.idea/
\ No newline at end of file