add sqlserver agent completed job metrics to metadata (#18691)

sqlserver/metadata.csv

@@ -6,6 +6,8 @@ sqlserver.access.probe_scans,gauge,,operation,second,Number of probe scans per s
 sqlserver.access.range_scans,gauge,,operation,second,Number of qualified range scans through indexes per second. (Perf. Counter: `Access Methods - Range Scans/sec`),-1,sql_server,range scans,,
 sqlserver.agent.active_jobs.duration,gauge,,second,,Duration of currently running jobs on sqlserver agent,0,sql_server,agent job duration,,
 sqlserver.agent.active_jobs.step_info,gauge,,,,Presence of a most recent completed step for active jobs running on the sqlserver agent.,0,sql_server,agent job step info,,
+sqlserver.agent.completed_jobs.duration,gauge,,second,,Duration of completed jobs on sqlserver agent (DBM Only),0,sql_server,agent job duration,,
+sqlserver.agent.completed_jobs.executions,gauge,,execution,,Number of executions of completed jobs on sqlserver agent (DBM Only),0,sql_server,agent job executions,,
 sqlserver.ao.ag_sync_health,gauge,,,,"Availability group synchronization health: 0 = Not healthy, 1 = Partially healthy, 2 = Healthy. Tags: `availability_group`, `availability_group_name`, `synchronization_health_desc`",0,sql_server,ag sync health,,
 sqlserver.ao.filestream_send_rate,gauge,,byte,second,"The rate at which the FILESTREAM files are shipped to the secondary replica. Tags: `availability_group`, `availability_group_name`, `replica_server_name`, `failover_mode`, `availability_mode`, `db`, `replica_id`, `database_id`, `database_state`, `synchronization_state`, `failover_cluster`, `replica_role`",0,sql_server,filestream send rate,,
 sqlserver.ao.is_primary_replica,gauge,,,,"Denotes if a replica is a primary(1) or secondary(0). Tags: `availability_group`, `availability_group_name`, `replica_server_name`, `failover_mode`, `availability_mode`, `db`, `replica_id`, `database_id`, `database_state`, `synchronization_state`, `failover_cluster`, `replica_role`",0,sql_server,is primary replica,,