add POST to ratings service to demonstrate security policies on HTTP Methods (#10778)
add POST to ratings service to demonstrate security policies on HTTP Methods (#10778)

* add POST to ratings service

* put a space between if and opening parenthesis

* add comments

* remove extra line-break

istio/istio,istio/istio,geeknoid/istio,istio/istio,smawson/istio,smawson/istio,smawson/istio,smawson/istio,smawson/istio,geeknoid/istio,geeknoid/istio,istio/istio,geeknoid/istio,smawson/istio,geeknoid/istio,istio/istio,geeknoid/istio