jenkins.py cleanup
jenkins.py cleanup

Fixes bug #1026513

Change-Id: Iac2c7cbfbc00fa2e1157ef19b6bd5c21a4d4bc42

devdattakulkarni/zuul_messaging,wikimedia/integration-zuul,gooddata/zuul,gooddata/zuul,wikimedia/integration-zuul,gooddata/zuul,devdattakulkarni/zuul_messaging,wikimedia/integration-zuul,bhuvan/zuul,devdattakulkarni/zuul_messaging,gooddata/zuul,wikimedia/integration-zuul,gooddata/zuul