* append appropriate urls when scaffolding
* make dispatch for rest-api
* fix dispatch for rest-json
* fix moto/core/response to obtain path and body parameters
* small fixes
* remove unused import
* fix get_int_param
* fix scaffold
* fix formatting of scaffold
* fix misc
* escape service to handle service w/ hyphen like iot-data
* escape service w/ hyphen
* fix regexp to extract region from url
* escape service
* fix syntax
* skip loading body to json object when request body is None
