DodoApp: Use JSON file for configuration.

Specify json schema so code editors can validate user input.
Update auth proxy to disable auth on specified paths.

Change-Id: Ic6667d802a9553444d3630c4ff73f4b33304ccfd
diff --git a/charts/auth-proxy/values.yaml b/charts/auth-proxy/values.yaml
index 779772d..45bc602 100644
--- a/charts/auth-proxy/values.yaml
+++ b/charts/auth-proxy/values.yaml
@@ -10,3 +10,4 @@
 membershipPublicAddr: https://memberships.p.example.com
 groups: ""
 portName: http
+noAuthPathPrefixes: ""