openvpn: increase procd termination timeout to 15s

Increase the termination timeout to 15s to let OpenVPN properly tear down
its connections, especially when weak links or complex down scripts are
involved.

Fixes FS#859.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

package/network/services/openvpn/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=openvpn
 
 PKG_VERSION:=2.4.5
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_SOURCE_URL:=\
 	https://build.openvpn.net/downloads/releases/ \

package/network/services/openvpn/files/openvpn.init

@@ -67,6 +67,7 @@ openvpn_add_instance() {
 		--cd "$dir" \
 		--config "$conf"
 	procd_set_param file "$dir/$conf"
+	procd_set_param term_timeout 15
 	procd_set_param respawn
 	procd_append_param respawn 3600
 	procd_append_param respawn 5