Use a common naming pattern for all jobs

Use a common naming pattern for all jobs

Make sure all jobs are named using the following pattern:

    [<job-type>:]<build-type>:<system>:<architecture>

where specifying <job-type> is optional for "precheck" and "build" jobs.

This should make it easier to quickly recognize:

  - what kind of actions are performed by each job,
  - which BIND build flavor is used by each job,
  - which operating system image is used by each job.

(cherry picked from commit 1fe432c6c385fc36ff4aa49b692b98ba043b413e)