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/templates/install.yaml b/charts/auth-proxy/templates/install.yaml
index 33ed875..2ce79bc 100644
--- a/charts/auth-proxy/templates/install.yaml
+++ b/charts/auth-proxy/templates/install.yaml
@@ -45,3 +45,4 @@
         - --membership-public-addr={{ .Values.membershipPublicAddr }}
         - --groups={{ .Values.groups }}
         - --upstream={{ .Values.upstream }}
+        - --no-auth-path-prefixes={{ .Values.noAuthPathPrefixes }}