…312021 (pull request elastic#418)

[MPC-4411] - Whiteboard files expiration rule for public rooms

* whiteboard files expirtaion rule for public rooms

* resolve nits from review


Approved-by: fabien
Approved-by: Anton Sapozhnikov
Approved-by: Can Yildiz

Fixes #418

Renames in `project` require a small conceptual change in the local
execution planning: So far, the layout always contained one entry per
block and there was a 1:1 mapping from attributes to blocks/channels.
This assumption no longer holds as the same block might be mapped to
multiple attribute ids. E.g. the query `from test | project x = count, y
= count` creates a project operator that drops all blocks except `count`
and is associated with the mapping `Id(x) -> 0, Id(y) -> 0`.

This commit adds the race configurations for the geopointshape
benchmarks as discussed in elastic/night-rally#129 (comment)

These will be run on the new group-3 (ref: elastic/elasticsearch-benchmarks#401).

The necessary visualizations, as well the Jenkins job to trigger these
will come as a separate PR.

Relates elastic#129

This commit adds group-3 to the default scripts created by the
Vagrantfile that help testing nightly/release benchmarks.

This was missing from elastic#418.