Fix for incorrect locks set

slurmctld would abort if started when slurmdbd down then later
started.

slurmctld: (node_scheduler.c:3182) job:14683 gres_req:NONE gres_alloc:
slurmctld: (node_scheduler.c:2868) job:14683 gres:NONE gres_alloc:
slurmctld: sched: Allocate JobID=14683 NodeList=nid00001 #CPUs=1 Partition=debug
slurmctld: error: slurmdbd: Sending PersistInit msg: Connection refused
slurmctld: error: slurmdbd: DBD_SEND_MULT_JOB_START failure: Connection refused
slurmctld: error: /home/jette/Desktop/SLURM/slurm.git/src/slurmctld/controller.c:2456:
set_cluster_tres(): Assertion (verify_lock(NODE_LOCK, WRITE_LOCK)) failed.

==29635==
==29635== Process terminating with default action of signal 6 (SIGABRT): dumping core
==29635==    at 0x54980BB: raise (raise.c:51)
==29635==    by 0x5499F5C: abort (abort.c:90)
==29635==    by 0x4FCBFC0: __xassert_failed (xassert.c:57)
==29635==    by 0x131FC5: set_cluster_tres (controller.c:2456)
==29635==    by 0x1329B4: _assoc_cache_mgr (controller.c:3230)
==29635==    by 0x52497FB: start_thread (pthread_create.c:465)
==29635==    by 0x5575B5E: clone (clone.S:95)