add job to build src:developers-reference on commits to master branch

- defaults:

    name: def-ref

    project-type: freestyle

    properties:

      - sidebar:

          url: https://jenkins.debian.net/userContent/about.html

          text: About jenkins.debian.net

          icon: /userContent/images/debian-swirl-24x24.png

      - sidebar:

          url: http://www.profitbricks.co.uk

          text: Sponsored by Profitbricks

          icon: /userContent/images/profitbricks-24x24.png

    description: 'Build the master branch of https://salsa.debian.org/debian/{my_package} in sid on every commit.<br><br>Job configuration source is <a href=""https://salsa.debian.org/qa/jenkins.debian.net/blob/master/job-cfg/def-ref.yaml>def-ref.yaml</a>.'

    logrotate:

      daysToKeep: 90

      numToKeep: 30

      artifactDaysToKeep: -1

      artifactNumToKeep: -1

    scm:

      - git:

          url: '{my_url}'

          branches:

            - master

    builders:

      - shell: '{my_shell}'

    triggers:

      - pollscm:

          cron: 'H/1 H/1 * * *'

    publishers:

      - email:

          recipients: 'holger@debian.org'

      - naginator:

          progressive-delay-increment: 5

          progressive-delay-maximum: 15

          max-failed-builds: 3

          regular-expression: '(Caused by: hudson.plugins.git.GitException: Command "git fetch|^ERROR: Error cloning remote repo)'

- job-template:

    defaults: dev-ref

    name: '{name}_{my_distro}_{my_package}'

- project:

    name: dev-ref

    my_distro: 'sid'

    my_shell: '/srv/jenkins/bin/chroot-run.sh {my_distro} debuild -b -uc -us'

    my_url: 'https://salsa.debian.org/debian/{my_package}'

    my_package:

        - 'developers-reference'

    jobs: ['{name}_{my_distro}_{my_package}']