new startup for cobald containers

roles/slurm/files/start-scripts/20-slurmctld

@@ -0,0 +1,4 @@
+#!/bin/sh
+su -s /bin/sh -c "slurmctld -D" ${slurmuser} 2>/dev/null 1>/dev/null &
+tail --retry --pid $! -f ${SLURMCTLD_LOG_PATH} ${SLURM_SCHED_LOG_PATH}
+