* Updates .ci folder to latest incarnation
The .ci folder cleanup some of its cleanup/wait routines so that they
can be reused. It also significantly reduced the available environment
variable toggles. In lieu of those toggles `run-repository.sh` can now
start multiple nodes using `NUMBER_OF_NODES`
* update certs
Introduces a dedicated `run-repository.sh` for the repository custom
bits.
This allows us to keep `run-elasticsearch.sh` and `run-tests` in sync
through file copying or patches easier.
Co-authored-by: Tomas Della Vedova <delvedor@users.noreply.github.com>
