correct hostname

# as offline in the jenkins UI.

#

# The code greps for the local hostname, i.e.

# foobar-armhf-rb

# foobar-armhf

# codethink-sled23-arm64

# profitbricks-build42-amd64

#

# Also see https://pad.sfconservancy.org/p/rb-build-nodes-keep

## temporary problems

cb3a-armhf-rb

cb3a-armhf

# Down here nodes are automtically added by the maintenance job when they have

# been failing their health check for too long.