package/openvmtools: source default file

In the SYSV init script allow /etc/default/vmtoolsd to override $ARGS
(if it present)

Signed-off-by: Simon Rowe <simon.rowe@citrix.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 3d104ce719a11ff8fd562f5447d416c1e010878b)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/openvmtools/S10vmtoolsd

@@ -7,6 +7,8 @@ EXEC="/usr/bin/vmtoolsd"
 ARGS="-b"
 PID="/var/run/vmtoolsd.pid"
 
+[ -r /etc/default/vmtoolsd ] && . /etc/default/vmtoolsd
+
 case "$1" in
   start)
     printf "Starting vmtoolsd: "