Since transition from the EOL model to the EM model eol branches
are no longer removed and this step is no longer in the release team
process.
Keep stale branches can be an issue in some situation especially with
zuul and our gates. To avoid this situation the release team propose
to reintroduce regular checks to ensure that we remove stale branches
that have been tagged eol previously.
As discussed during our previous meetings soon it will be possible to design
a new job and to trigger it to remove eol branches automatically.
This will possible when the infra would have been updated and when all
the needed pieces will be in place.
Change-Id: I53aeb3211bb3251a3278472a514a39afe825cdd2
003eb35717