jenkins-job-yam: Add the '-job' keyword
jenkins-job-yam: Add the '-job' keyword

Currently, there is not '-job' keyword on the generated yaml file
hence it crashes when it tries to load it.

madAndroid/puppet-jenkins_job_builder,gdhbashton/puppet-jenkins_job_builder,thanandorn/puppet-jenkins_job_builder,gdhbashton/puppet-jenkins_job_builder,gregswift/puppet-jenkins_job_builder,redhat-cip/puppet-jenkins_job_builder,puppet-community/puppet-jenkins_job_builder,redhat-cip/puppet-jenkins_job_builder,gregswift/puppet-jenkins_job_builder,mkrakowitzer/puppet-jenkins_job_builder,voxpupuli/puppet-jenkins_job_builder,thanandorn/puppet-jenkins_job_builder,mkrakowitzer/puppet-jenkins_job_builder,puppet-community/puppet-jenkins_job_builder,voxpupuli/puppet-jenkins_job_builder,madAndroid/puppet-jenkins_job_builder