Try a simpler approach to package the gitlab-deps-update units

debian/rules

 #!/usr/bin/make -f
 # -*- makefile -*-
 
-SYSTEMD_UNITS = \
-	gitlab-deps.service \
-	gitlab-deps-update.timer \
-	gitlab-deps-update.service
-
 export PYBUILD_NAME=gitlab-deps
 
 %:
@@ -20,4 +15,5 @@ override_dh_auto_install:
 	  $(CURDIR)/debian/gitlab-deps/usr/sbin/update-gitlab-deps
 
 override_dh_installsystemd:
-	dh_installsystemd $(SYSTEMD_UNITS)
+	dh_installsystemd --name=gitlab-deps
+	dh_installsystemd --name=gitlab-deps-update