openvpn: openvpn-volatile.conf: avoid hardcoded localstatedir

Signed-off-by: Andrea Galbusera <gizero@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>

meta-networking/recipes-support/openvpn/openvpn/openvpn-volatile.conf

@@ -1 +1 @@
-d /var/run/openvpn 0755 root root -
+d @LOCALSTATEDIR@/run/openvpn 0755 root root -

meta-networking/recipes-support/openvpn/openvpn_2.3.9.bb

@@ -50,6 +50,7 @@ do_install_append() {
 
         install -d ${D}${sysconfdir}/tmpfiles.d
         install -m 0644 ${WORKDIR}/openvpn-volatile.conf ${D}${sysconfdir}/tmpfiles.d/openvpn.conf
+        sed -i -e 's#@LOCALSTATEDIR@#${localstatedir}#g' ${D}${sysconfdir}/tmpfiles.d/openvpn.conf
     fi
 }