To change default region from 'us-east-1' to 'custom'.
Add a region value in your 'config.json'.
"version": "2",
"credentials": {
"accessKeyId": "****************",
"secretAccessKey": "***************",
"region": "my-region"
},
Do not look for Content-Length in headers and try to convert them into
integer representations use ContentLength field from *http.Request*.
If Content-Length is understood to be as '-1' then treat it as an error
condition, since it could be a malformed body to crash the server.
Fixes#1011
