add supporting files for tests

Author: keflavich

astroquery/alma/tests/__init__.py

@@ -0,0 +1,9 @@
+# Licensed under a 3-clause BSD style license - see LICENSE.rst
+import os
+
+
+def get_package_data():
+    paths = [os.path.join('data', '*.xml'),
+             ]
+    return {'astroquery.alma.tests': paths}
+