lldpd: freeze execution of lldpd during reload

During reload, we could send invalid information to the other
side and confuse it.

That's why, during reload we'll pause execution, do the reconfig
and resume + update when reload is done.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

package/network/services/lldpd/files/lldpd.init

@@ -99,6 +99,7 @@ service_running() {
 reload_service() {
 	running || return 1
 	$LLDPCLI -u $LLDPSOCKET &> /dev/null <<-EOF
+		pause
 		unconfigure lldp custom-tlv
 		unconfigure system interface pattern
 		unconfigure system description
@@ -108,7 +109,10 @@ reload_service() {
 	write_lldpd_conf
 	$LLDPCLI -u $LLDPSOCKET -c $LLDPD_CONF -c $LLDPD_CONFS_DIR &> /dev/null
 	# Broadcast update over the wire
-	$LLDPCLI -u $LLDPSOCKET update &> /dev/null
+	$LLDPCLI -u $LLDPSOCKET &> /dev/null <<-EOF
+		resume
+		update
+	EOF
 	return 0
 }