This adds readTree configuration for accessing my local package set,
and also adds these packages to the CI configuration.
Change-Id: Icd2d16e85859343902e73a466f3c6ba8d781537f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2131
Tested-by: BuildkiteCI
Reviewed-by: multi <depot@in-addr.xyz>