Fix gzip and brotli tests

Author: pbiggar

fsharp-backend/tests/httptestfiles/request-header-content-encoding-brotli.test

@@ -268,22 +268,25 @@ GET / HTTP/1.1
 Host: HOST
 Date: Sun, 08 Nov 2020 15:38:01 GMT
 Content-Length: 0
-Accept-encoding: gzip
+Accept-encoding: br
 
 
 
 [response]
 HTTP/1.1 200 OK
 Date: xxx, xx xxx xxxx xx:xx:xx xxx
 Content-Type: text/plain
-Content-encoding: gzip
+Content-Encoding: br // FSHARPONLY
+Content-Length: LENGTH // OCAMLONLY
 Access-Control-Allow-Origin: * // FSHARPONLY
 access-control-allow-origin: * // OCAMLONLY
 x-darklang-execution-id: 0123456789
 Server: nginx/1.16.1 // OCAMLONLY
 Server: darklang // FSHARPONLY
 Connection: keep-alive // OCAMLONLY
-Content-Length: LENGTH
+Vary: Accept-Encoding // FSHARPONLY
+Strict-Transport-Security: max-age=31536000; includeSubDomains; preload // FSHARPONLY
+Transfer-Encoding: chunked // FSHARPONLY
 
 /*! * * * * * * * * * * * * * * * * * * * *
       CSShake :: shake

fsharp-backend/tests/httptestfiles/request-header-content-encoding-gzip.test

@@ -282,9 +282,10 @@ access-control-allow-origin: * // OCAMLONLY
 x-darklang-execution-id: 0123456789
 Server: nginx/1.16.1 // OCAMLONLY
 Server: darklang // FSHARPONLY
-Transfer-Encoding: chunked
-Vary: Accept-Encoding // FSHARPONLY
 Connection: keep-alive // OCAMLONLY
+Vary: Accept-Encoding // FSHARPONLY
+Strict-Transport-Security: max-age=31536000; includeSubDomains; preload // FSHARPONLY
+Transfer-Encoding: chunked
 
 /*! * * * * * * * * * * * * * * * * * * * *
       CSShake :: shake