feat(curl): configuration setting to pass additional options to curl command for "Try it out" (#6288)

Allows `requestInterceptor` to add options to the curl command.
For example:

```js
requestInterceptor: function (request) {
  if (request.method === 'GET') {
    request.curlOptions = ['-g']
    request.url = request.url
      .replace('%5B', '[')
      .replace('%5D', ']')
      .replace('%2C', ',');
  }
  return request;
}
```

docs/usage/configuration.md

@@ -71,6 +71,7 @@ Parameter name | Docker variable | Description
 --- | --- | -----
 <a name="oauth2RedirectUrl"></a>`oauth2RedirectUrl` | `OAUTH2_REDIRECT_URL` | `String`. OAuth redirect URL.
 <a name="requestInterceptor"></a>`requestInterceptor` | _Unavailable_ | `Function=(a => a)`. MUST be a function.  Function to intercept remote definition, "Try it out", and OAuth 2.0 requests.  Accepts one argument requestInterceptor(request) and must return the modified request, or a Promise that resolves to the modified request.
+<a name="request.curlOptions"></a>`request.curlOptions` | _Unavailable_ | `Array`.  If set, MUST be an array of command line options available to the `curl` command.  This can be set on the mutated request in the `requestInterceptor` function. For example `request.curlOptions = ["-g", "--limit-rate 20k"]`
 <a name="responseInterceptor"></a>`responseInterceptor` | _Unavailable_ | `Function=(a => a)`. MUST be a function.  Function to intercept remote definition, "Try it out", and OAuth 2.0 responses.  Accepts one argument responseInterceptor(response) and must return the modified response, or a Promise that resolves to the modified response.
 <a name="showMutatedRequest"></a>`showMutatedRequest` | `SHOW_MUTATED_REQUEST` | `Boolean=true`. If set to `true`, uses the mutated request returned from a requestInterceptor to produce the curl command in the UI, otherwise the request before the requestInterceptor was applied is used.
 <a name="supportedSubmitMethods"></a>`supportedSubmitMethods` | `SUPPORTED_SUBMIT_METHODS` | `Array=["get", "put", "post", "delete", "options", "head", "patch", "trace"]`. List of HTTP methods that have the "Try it out" feature enabled. An empty array disables "Try it out" for all operations. This does not filter the operations from the display.

src/core/curlify.js

@@ -20,6 +20,11 @@ export default function curl( request ){
   let isMultipartFormDataRequest = false
   let headers = request.get("headers")
   curlified.push( "curl" )
+
+  if (request.get("curlOptions")) {
+    curlified.push(...request.get("curlOptions"))
+  }
+
   curlified.push( "-X", request.get("method") )
   curlified.push( `"${request.get("url")}"`)
 

test/unit/core/curlify.js

@@ -364,4 +364,30 @@ describe("curlify", function () {
 
     expect(curlified).toEqual("curl -X POST \"http://example.com\" -d \"RETURN \\$x + \\$y\"")
   })
+
+  it("should include curlOptions from the request in the curl command", function () {
+    let req = {
+      url: "http://example.com",
+      method: "GET",
+      headers: { "X-DOLLAR": "token/123$" },
+      curlOptions: ["-g"]
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -g -X GET \"http://example.com\" -H  \"X-DOLLAR: token/123\\$\"")
+  })
+
+  it("should include multiple curlOptions from the request in the curl command", function () {
+    let req = {
+      url: "http://example.com",
+      method: "GET",
+      headers: { "X-DOLLAR": "token/123$" },
+      curlOptions: ["-g", "--limit-rate 20k"]
+    }
+
+    let curlified = curl(Im.fromJS(req))
+
+    expect(curlified).toEqual("curl -g --limit-rate 20k -X GET \"http://example.com\" -H  \"X-DOLLAR: token/123\\$\"")
+  })
 })