Makefile.am: EXTRA_DIST: debian, contrib/*.spec.in

Change-Id: I401a4849ae186bddd667446ff7247976090e1db7
diff --git a/Makefile.am b/Makefile.am
index a54dcb2..9a92f2f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,6 +11,8 @@
 
 EXTRA_DIST = \
 	.version \
+	contrib/osmo-hlr.spec.in \
+	debian \
 	$(NULL)
 
 AM_DISTCHECK_CONFIGURE_FLAGS = \