procd: copy the respawn property of new instance

On updating an existing instance, the respawn property is reset
in instance_stop(). Subsequent instance_update() call does not copy
the respawn property from new instance in instance_config_move(). As
a result, the respawning does not happen, if the process is killed
externally.

Signed-off-by: Yashavanth Chowrikoppalu <Yashavanth.hsn@gmail.com>

service/instance.c

@@ -967,6 +967,7 @@ instance_config_move(struct service_instance *in, struct service_instance *in_sr
 	in->trigger = in_src->trigger;
 	in->command = in_src->command;
 	in->pidfile = in_src->pidfile;
+	in->respawn = in_src->respawn;
 	in->respawn_retry = in_src->respawn_retry;
 	in->respawn_threshold = in_src->respawn_threshold;
 	in->respawn_timeout = in_src->respawn_timeout;