Move accept header to client instead of proxy

Signed-off-by: Julio Zynger <julio.zynger@soundcloud.com>

app-config.yaml

@@ -110,10 +110,9 @@ proxy:
   '/gocd':
     target: https://your.gocd.instance.com/go/api
     allowedMethods: ['GET']
-    allowedHeaders: ['Authorization', 'Accept']
+    allowedHeaders: ['Authorization']
     headers:
       Authorization: Basic ${GOCD_AUTH_TOKEN}
-      Accept: application/vnd.go.cd+json
 
 organization:
   name: My Company

plugins/gocd/README.md

@@ -41,10 +41,9 @@ proxy:
   '/gocd':
     target: '<go cd server host>/go/api'
     allowedMethods: ['GET']
-    allowedHeaders: ['Authorization', 'Accept']
+    allowedHeaders: ['Authorization']
     headers:
       Authorization: Basic ${GOCD_AUTH_TOKEN}
-      Accept: application/vnd.go.cd+json
 ```
 
 You should also include the `gocd` section to allow for the plugin to redirect back to GoCD pipelines in your deployed instance:

plugins/gocd/src/api/gocdApi.client.ts

@@ -26,6 +26,11 @@ export class GoCdClientApi implements GoCdApi {
     const baseUrl = await this.discoveryApi.getBaseUrl('proxy');
     const pipelineHistoryResponse = await fetch(
       `${baseUrl}/gocd/pipelines/${pipelineName}/history`,
+      {
+        headers: {
+          Accept: 'application/vnd.go.cd+json',
+        },
+      },
     );
 
     return await pipelineHistoryResponse.json();