tests/Makefile.am: also remove temporary sqlite files

The osmo_verify_transcript_*.py do terminate the osmo-hlr process
in some unusual way, so the database file is not closed properly.

Let's remove temporary files after the tests execution.

Change-Id: I9e4c98e86c1d6b627bfee1acb4fa116460687483
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 58679ed..7e45da4 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -57,6 +57,7 @@
 		-r "$(top_builddir)/src/osmo-hlr -c $(top_srcdir)/doc/examples/osmo-hlr.cfg -l $(VTY_TEST_DB)" \
 		$(U) $(srcdir)/*.vty
 	-rm -f $(VTY_TEST_DB)
+	-rm $(VTY_TEST_DB)-*
 
 CTRL_TEST_DB = hlr_ctrl_test.db
 
@@ -72,6 +73,7 @@
 		-r "$(top_builddir)/src/osmo-hlr -c $(top_srcdir)/doc/examples/osmo-hlr.cfg -l $(CTRL_TEST_DB)" \
 		$(U) $(srcdir)/*.ctrl
 	-rm -f $(CTRL_TEST_DB)
+	-rm $(CTRL_TEST_DB)-*
 
 else
 python-tests: