add secure: always to static file routes

app.yaml

@@ -27,28 +27,35 @@ handlers:
 - url: /(static/bootstrap.*\.css)
   static_files: local/lib/python2.7/site-packages/oauth_dropins/\1
   upload: local/lib/python2.7/site-packages/oauth_dropins/static/bootstrap.*\.css
+  secure: always
 
 - url: /static
   static_dir: static
+  secure: always
 
 - url: /oauth_dropins/static
   static_dir: local/lib/python2.7/site-packages/oauth_dropins/static
+  secure: always
 
 - url: /.well-known
   static_dir: .well-known
+  secure: always
 
 - url: /
   static_files: static/index.html
   upload: static/index.html
   expiration: 1m
+  secure: always
 
 - url: /favicon.ico
   static_files: static/favicon.ico
   upload: static/favicon.ico
+  secure: always
 
 - url: /robots.txt
   static_files: static/robots.txt
   upload: static/robots.txt
+  secure: always
 
 # dynamic
 - url: /wm/.+