Automatically add kerberos_spnego omniauth

config/initializers/1_settings.rb

@@ -436,6 +436,10 @@ Settings.kerberos['use_dedicated_port'] = false if Settings.kerberos['use_dedica
 Settings.kerberos['https'] = Settings.gitlab.https if Settings.kerberos['https'].nil?
 Settings.kerberos['port'] ||= Settings.kerberos.https ? 8443 : 8088
 
+if Settings.kerberos['enabled'] && !Settings.omniauth.providers.map(&:name).include?('kerberos_spnego')
+  Settings.omniauth.providers << Settingslogic.new({ 'name' => 'kerberos_spnego' })
+end
+
 #
 # Extra customization
 #