avoid MacOS keychain dialog in integration tests

Author: bohde

tests/integration/integration_test.go

@@ -95,6 +95,11 @@ func TestMain(m *testing.M) {
 	os.Unsetenv("GIT_COMMITTER_EMAIL")
 	os.Unsetenv("GIT_COMMITTER_DATE")
 
+	// Avoid loading the default system config. On MacOS, this config
+	// sets the osxkeychain credential helper, which will cause tests
+	// to freeze with a dialog.
+	os.Setenv("GIT_CONFIG_NOSYSTEM", "true")
+
 	err := unittest.InitFixtures(
 		unittest.FixturesOptions{
 			Dir: filepath.Join(filepath.Dir(setting.AppPath), "models/fixtures/"),