contrib: Disable installing unneeded systemd service files

Otherwise since we install without root perissins to a local directory,
systemd files will fail to be installed to regular systemd location
/lib/systemd/system/).

Change-Id: I20a285e4e92fec7990770568e8d5dc117d6bf477
diff --git a/contrib/jenkins-build-common.sh b/contrib/jenkins-build-common.sh
index b8cafcf..731bf58 100644
--- a/contrib/jenkins-build-common.sh
+++ b/contrib/jenkins-build-common.sh
@@ -132,7 +132,7 @@
   set +x; echo; echo; set -x
   autoreconf -fi
   set +x; echo; echo; set -x
-  ./configure --prefix="$prefix" $CONFIGURE_FLAGS $configure_opts
+  ./configure --prefix="$prefix" --with-systemdsystemunitdir=no $CONFIGURE_FLAGS $configure_opts
   set +x; echo; echo; set -x
   make -j8 || make  # libsmpp34 can't build in parallel
   set +x; echo; echo; set -x