Fix index generation for api-ref

api-ref does not have an index.html file, adjust for this.

Change-Id: I9cbd3cdaab75f53919d1191d8757dc00abaff09a

README.rst

@@ -101,6 +101,7 @@ Release notes
 -----
 
  * Fix openstack-doc-test building of image-api.
+ * Fix publishing of api-ref.
  * Improve markdown conversion.
 
 0.8

os_doc_tools/doctest.py

@@ -1011,6 +1011,12 @@ def generate_index_file():
                              (path, path))
             index_file.write('<br/>\n')
 
+        if os.path.isfile(os.path.join(root, 'api-ref.html')):
+            path = os.path.relpath(root, publish_path)
+            index_file.write('<a href="%s/api-ref.html">%s</a>\n' %
+                             (path, path))
+            index_file.write('<br/>\n')
+
     index_file.write('</body>\n'
                      '</html>\n')
     index_file.close()