Disable dh_auto_test and bump version

`make test` is currently failing when building with  sbuild because it tries to run the
postgres database as root, which is not allowed. Since the test cases are also run using the
Gitlab CI, we ignore this issue for now.

debian/changelog

+goatherd (0.4) unstable; urgency=medium
+
+  * Disable dh_auto_test and bump version
+
+ -- David Sauerwein <la38vyti-adm@stud.informatik.uni-erlangen.de>  Tue, 30 Jul 2019 12:01:28 +0200
+
 goatherd (0.3) unstable; urgency=medium
 
   * subcommands instead of flags for actions

debian/rules

@@ -13,3 +13,5 @@ override_dh_install:
 	dh_install
 	install -D -t $(CURDIR)/debian/goatherd/etc/ $(CURDIR)/debian/goatherd.conf
 	install -Dd -m 0700 $(CURDIR)/debian/goatherd/var/lib/goatherd
+
+override_dh_auto_test: