debian: install scrub services with dh_installsystemd

Use dh_installsystemd to handle the installation and activation of the
scrub systemd services.  This requires bumping the compat version to 11.
Note that the services are /not/ activated on installation.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
diff --git a/debian/compat b/debian/compat
index ec63514..b4de394 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-9
+11
diff --git a/debian/rules b/debian/rules
index 615289b..c1f3931 100755
--- a/debian/rules
+++ b/debian/rules
@@ -100,6 +100,7 @@
 	dh_compress
 	dh_fixperms
 	dh_makeshlibs
+	dh_installsystemd -p xfsprogs --no-enable --no-start --no-restart-after-upgrade --no-stop-on-upgrade
 	dh_installdeb
 	dh_shlibdeps
 	dh_gencontrol