* Add test cases for job client

* Fix the test errors

* Fix issues found by sonar

* Fix the cognitive complexity

* Debug the tests

* Fix the download error

* Fix the error of request matcher

* Fix the test errors

* uncomment the test code lines

* Add test cases for requestmatcher

* Add test cases for restart jenkins

* Build always failed due to sonar gate

* Add go vet and golint

* Fix all problems found by golint

* Install golint in traivs

* Fix the test fail

* Add test cases for job create

* Add test cases for edit user desc

* Add test cases for user delete

* 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

* Add travis and sonar project property file

* Add blank line

* Fix the error when execute test because of no bin dir

* Add language setting

* Add env set for go module

* Add dist trusty

* Change test report file