switch/hpe_slingshot - Set default destroy_retries if not configured

Continuation of c05c957

The slurmstepd uses slingshot_stepd_init() to set
slingshot_config.destroy_retries. If destroy_retries was not configured in
SwitchParameters it was being left as 0. Now it will default to
SLINGSHOT_CXI_DESTROY_RETRIES, which is 5.

Ticket: 22715

Author: Megan Dahl

src/plugins/switch/hpe_slingshot/config.c

@@ -718,6 +718,8 @@ extern bool slingshot_stepd_init(const char *switch_params)
 	const char destroy_retries[] = "destroy_retries";
 	const size_t size_destroy_retries = sizeof(destroy_retries) - 1;
 
+	slingshot_config.destroy_retries = SLINGSHOT_CXI_DESTROY_RETRIES;
+
 	params = xstrdup(switch_params);
 	for (token = strtok_r(params, ",", &save_ptr); token;
 	     token = strtok_r(NULL, ",", &save_ptr)) {