[Apiman-user] Content-type header included in gateway DELETE requests to endpoint

A client-side javascript app is performing the following request: *DELETE /apiman-gateway/org/service/1.1/resource/7 HTTP/1.1Host: 172.17.0.1:8080 <http://172.17.0.1:8080>User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Accept-Encoding: gzip, deflateAuthorization: Bearer $ACCESS_TOKENReferer: http://172.17.0.1:3000/ <http://172.17.0.1:3000/>Origin: http://172.17.0.1:3000 <http://172.17.0.1:3000>Connection: keep-alive* But the gateway is performing the following request to the endpoint: *DELETE /service/rest/resource/7 HTTP/1.1User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)Origin: http://172.17.0.1:3000 <http://172.17.0.1:3000>Accept-Language: en-US,en;q=0.5Accept-Encoding: gzip, deflateConnection: keep-aliveAuthorization: Bearer $ACCESS_TOKENAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/msword, application/vnd.ms-powerpoint, */*Referer: http://172.17.0.1:3000/ <http://172.17.0.1:3000/>Host: 172.17.0.1:8280 <http://172.17.0.1:8280>Content-Type: application/x-www-form-* *urlencodedContent-Length: 0* Resulting in a 415 Unsupported Media Type at the endpoint. GET, POST and PUT requests are OK. Only using CORS Policy for this endpoint: *Access-Control-Allow-Origin: *Access-Control-Allow-Credentials: trueAccess-Control-Allow-Headers: accept, authrotization, content-typeAccess-Control-Allow-Methods: GET, POST, PUT, DELETEAccess-Control-Max-Age: 3600*