Debian: install osmo-hlr-dgsm.cfg as example config

Related: OS#4107
Change-Id: Ia64f14ada006acb31c5f725dfa0d52f482d3e8b4
diff --git a/debian/osmo-hlr.install b/debian/osmo-hlr.install
index 8b4039f..7c8c398 100644
--- a/debian/osmo-hlr.install
+++ b/debian/osmo-hlr.install
@@ -5,4 +5,5 @@
 /usr/share/doc/osmo-hlr/sql/hlr.sql
 /usr/share/doc/osmo-hlr/sql/hlr_data.sql
 /usr/share/doc/osmo-hlr/examples/osmo-hlr.cfg
+/usr/share/doc/osmo-hlr/examples/osmo-hlr-dgsm.cfg
 /usr/share/osmocom/osmo-hlr-post-upgrade.sh