Don't include the region param in authorizedRequest if it's already i…

…n the URL

ui/app/services/token.js

@@ -94,7 +94,7 @@ export default class TokenService extends Service {
   authorizedRequest(url, options) {
     if (this.get('system.shouldIncludeRegion')) {
       const region = this.get('system.activeRegion');
-      if (region) {
+      if (region && url.indexOf('region=') === -1) {
         url = addParams(url, { region });
       }
     }

ui/tests/unit/services/token-test.js

@@ -50,6 +50,17 @@ module('Unit | Service | Token', function(hooks) {
     );
   });
 
+  test('authorizedRequest does not include the region param when the region param is already in the URL', function(assert) {
+    const token = this.subject();
+
+    token.authorizedRequest('/path?query=param&region=already-here');
+    assert.equal(
+      this.server.handledRequests.pop().url,
+      '/path?query=param&region=already-here',
+      'The region param that is already in the URL takes precedence over the region in the service'
+    );
+  });
+
   test('authorizedRawRequest bypasses adding the region param', function(assert) {
     const token = this.subject();