xenopsd: fix config to match install location (xapi-project#5444)

Signed-off-by: Yann Dirson <[email protected]>

ocaml/xenopsd/scripts/make-custom-xenopsd.conf

@@ -37,12 +37,12 @@ supported-vbd-backend-kinds=vbd,qdisk,9pfs
 xenguest=${LIBEXECDIR}/xenguest
 
 network-conf=${ETCDIR}/xapi/network.conf
-vif-script=${LIBEXECDIR}/vif
-vif-xl-script=${LIBEXECDIR}/vif
-vbd-script=${LIBEXECDIR}/block
-vbd-xl-script=${LIBEXECDIR}/block
-qemu-vif-script=${LIBEXECDIR}/qemu-vif-script
-setup-vif-rules=${LIBEXECDIR}/setup-vif-rules
+vif-script=${XENOPSD_LIBEXECDIR}/vif
+vif-xl-script=${XENOPSD_LIBEXECDIR}/vif
+vbd-script=${XENOPSD_LIBEXECDIR}/block
+vbd-xl-script=${XENOPSD_LIBEXECDIR}/block
+qemu-vif-script=${XENOPSD_LIBEXECDIR}/qemu-vif-script
+setup-vif-rules=${XENOPSD_LIBEXECDIR}/setup-vif-rules
 sockets-group=$group
 qemu-wrapper=${QEMU_WRAPPER_DIR}/qemu-wrapper
 swtpm-wrapper=${QEMU_WRAPPER_DIR}/qemu-wrapper