[JENKINS] Preparing for the 4.3 branch

[Hugo Trippaers]

I’ve setup all the jenkins jobs for the release branch and a pipeline view.

When the branch is cut we only need to enable the jobs.

http://jenkins.buildacloud.org/view/4.3/
http://jenkins.buildacloud.org/view/cloudstack-4.3-pipeline/


Cheers,

Hugo