[RFC] What is buildhost

[Graeme Gregory]

Hi, time to bother you again.

But our admin team have pointed out that we are filling the disk on
buildhost very fast. But something we seem to lack for buildhost are
any policies on how it should be used. I am loath to demand a bigger
machine from admin guys until we have it decided how we actually want
to use buildhost going into the future.

So my opinions.

1) Buildhost is for building our official feeds and images.
2) Buildhost is not a debugging environment.
3) Due to 2) rm_work can be used.
4) We shouldnt expose the build tree as is public, it just causes
confusion like the .summary one.
5) Most builds should be incremental with maybe once a week/month a
clean of tmp/ is done. With Holgers changes to PERSISTANT_CACHE we
no longer lose git SRCREV increments.

But these are just my opinions. Hence why I send an RFC so distro team
can choose best policies going forward.

Graeme