Two new options to koji dist-repo.

• --with-draft will consider a draft build as the latest build.
• --without-draft will ignore draft builds and just typically take
  the latest non-draft build.

The default remains and if dist-repo encounters a draft build with
out one of the above options dist-repo will continue to exit.

Motivation here is to allow dist-repo to be used against tags containing
draft builds which is currently not possible.

Examples:

A tag containing two builds:
* myrpm-1.1-37.el9.x86_64.rpm NOT DRAFT
* myrpm-1.1-38.el9.x86_64.rpm DRAFT

koji dist-repo mytag9al-testing
        FAILED: BuildError: Draft build: myrpm-1.1-38.el9,draft_4 is not allowed

koji dist-repo mytag9al-testing --with-draft
         Deploys the DRAFT one.

koji dist-repo mytag9al-testing --without-draft
         Deploys the NOT DRAFT one.