Only use support request and response header to avoid acl issues

mediaflow_proxy/const.py

@@ -9,6 +9,12 @@ SUPPORTED_RESPONSE_HEADERS = [
     "etag",
     "server",
     "date",
+    "cache-control",
+    "expires",
+    "pragma",
+    "content-disposition",
+    "range",
+    "content-encoding",
 ]
 
 SUPPORTED_REQUEST_HEADERS = [