Some companies do not know the 'cl' term. They do know of 'change' and
would maybe not like to introduce one more synonym.
This cl introduce an optional entry 'gerritChangeName' in
besadii.json. The string has to match `^[a-z0-9]+$` for readability.
Change-Id: Id70fcb1e45158869f88bf37669be49b8b8a3b295
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4825
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: asmundo <asmundo@gmail.com>