Preserve the values of AuthType and JobCompType between reconfigurations.

Slurmctld must be restarted for changes in these configuration parameters
to take effect. Previously these values would change, but there would be
no change in the already loaded plugin.

src/slurmctld/read_config.c

@@ -62,7 +62,8 @@ static void _purge_old_node_state(struct node_record *old_node_table_ptr,
 				int old_node_record_count);
 static void _restore_node_state(struct node_record *old_node_table_ptr, 
 				int old_node_record_count);
-static void _set_config_defaults(slurm_ctl_conf_t * ctl_conf_ptr);
+static void _set_config_defaults(slurm_ctl_conf_t * ctl_conf_ptr, 
+				char * auth_type, char *job_comp_type);
 static int  _sync_nodes_to_comp_job(void);
 static int  _sync_nodes_to_jobs(void);
 static int  _sync_nodes_to_active_job(struct job_record *job_ptr);
@@ -662,6 +663,8 @@ int read_slurm_conf(int recover)
 	int i, j, error_code;
 	int old_node_record_count;
 	struct node_record *old_node_table_ptr;
+	char *save_auth_type     = xstrdup(slurmctld_conf.authtype); 
+	char *save_job_comp_type = xstrdup(slurmctld_conf.job_comp_type);
 
 	/* initialization */
 	START_TIMER;
@@ -743,7 +746,8 @@ int read_slurm_conf(int recover)
 	}
 	fclose(slurm_spec_file);
 
-	_set_config_defaults(&slurmctld_conf);
+	_set_config_defaults(&slurmctld_conf, save_auth_type, 
+			save_job_comp_type);
 	validate_config(&slurmctld_conf);
 	update_logging();
 	g_slurm_jobcomp_init(slurmctld_conf.job_comp_loc);
@@ -841,8 +845,15 @@ static void _purge_old_node_state(struct node_record *old_node_table_ptr,
 /* Set configuration parameters to default values if not initialized 
  * by the configuration file or common/read_config.c:validate_config()
  */
-static void _set_config_defaults(slurm_ctl_conf_t * ctl_conf_ptr)
+static void _set_config_defaults(slurm_ctl_conf_t * ctl_conf_ptr, 
+		char *auth_type, char *job_comp_type)
 {
+	xfree(ctl_conf_ptr->authtype);
+	ctl_conf_ptr->authtype = auth_type;
+
+	xfree(ctl_conf_ptr->job_comp_type);
+	ctl_conf_ptr->job_comp_type = job_comp_type;
+
 	if (ctl_conf_ptr->backup_controller == NULL)
 		info("read_slurm_conf: backup_controller not specified.");