Use X-Api-Key header in integration tests

src/NzbDrone.Integration.Test/Client/ClientBase.cs

@@ -101,6 +101,7 @@ namespace NzbDrone.Integration.Test.Client
                 };
 
             request.AddHeader("Authorization", _apiKey);
+            request.AddHeader("X-Api-Key", _apiKey);
 
             return request;
         }

src/NzbDrone.Integration.Test/IntegrationTest.cs

@@ -87,6 +87,7 @@ namespace NzbDrone.Integration.Test
         {
             RestClient = new RestClient(RootUrl + "api/");
             RestClient.AddDefaultHeader("Authentication", _runner.ApiKey);
+            RestClient.AddDefaultHeader("X-Api-Key", _runner.ApiKey);
 
             Series = new SeriesClient(RestClient, _runner.ApiKey);
             Releases = new ReleaseClient(RestClient, _runner.ApiKey);

src/NzbDrone.Test.Common/NzbDroneRunner.cs

@@ -61,6 +61,7 @@ namespace NzbDrone.Test.Common
 
                 var request = new RestRequest("system/status");
                 request.AddHeader("Authorization", ApiKey);
+                request.AddHeader("X-Api-Key", ApiKey);
 
                 var statusCall = _restClient.Get(request);