* Add support to clean invalid config item

* Fix the package issues

* Fix some issues found by hound

* Fixes the test errors

* Add support to download Jenkins

* Add test cases for http downloader

* Exclued mock files

* Exclued mock files

* Add test cases for center download

* Remove mock files

* Fix gen-mock

* Add init stage for building

* Add test case for jenkins upgrade cmd

* Add test casee for center watch cmd

* Add test case for center cmd