fix with global config state (#37293) (#37954)

(cherry picked from commit 697ac937c6)

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>

pkg/models/datasource_cache_test.go

@@ -296,6 +296,12 @@ func TestDataSource_GetHttpTransport(t *testing.T) {
 		})
 		clearDSProxyCache(t)
 
+		origSigV4Enabled := setting.SigV4AuthEnabled
+		setting.SigV4AuthEnabled = true
+		t.Cleanup(func() {
+			setting.SigV4AuthEnabled = origSigV4Enabled
+		})
+
 		json, err := simplejson.NewJson([]byte(`{ "sigV4Auth": true }`))
 		require.NoError(t, err)