[scn] mv definition of SCN to dir of share

tools/upgrade/upgrade_pre.py

@@ -12717,7 +12717,7 @@
 #def check_can_run_upgrade_job(cur, version):
 #  try:
 #    sql = """select job_status from oceanbase.__all_rootservice_job
-#             where job_type = 'RUN_UPGRADE_POST_JOB' and extra_info = '{0}'
+#             where job_type = 'UPGRADE_POST_ACTION' and extra_info = '{0}'
 #             order by job_id desc limit 1""".format(version)
 #    results = query(cur, sql)
 #