jenkins/jenkins-job-trigger HTTP failure should not be silent

[JanZerebecki]

After looking at #2679 it seems to me from the logs that when

automation/scripts/jenkins/jenkins-job-trigger

Line 63 in acc5e2a

server.build_job(job_name, job_parameters)

fails to create a job when the HTTPS certificate is expired it doesn't print any output. But it should. Also I'm unsure whether it correctly sets a failure exit return value.

The request is made around here: https://github.com/openstack/python-jenkins/blob/1.2.1/jenkins/__init__.py#L543
I would expect an SSLError exception or something to be printed.

[JanZerebecki]

The same happens when running many jenkins-job-trigger after another, at some point Jenkins doesn't register the jobs and again this failure is silent.

[ConsoleCatzirl]

I haven't tested it, but I think that https://review.openstack.org/599868 may do the trick.