hydra-slave: Merge with bentefllork's config.

It doesn't make sense to just add the line that disables
deployment.alwaysActivate to a machine specific configuration when it
makes sense for all Hydra slaves in general.

With this, let's try to keep machines/*.nix for machine-specific details
only.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Move benteflork's partitioning into hydra-slave.

When we add several new build slaves, it doesn't make sense to duplicate
partitioning information every time.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
hydra-slave: Use RAID0 by default.

We don't have any mission critical data an build slaves, so mirroring is
actually not needed here and we can go for performance without caring
about data loss.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
network: Rename benteflork to taalo.

This is because we're going to add a new build slave which is benteflork
then, and the Taalo are an extinct race, so it's an appropriate name :-)

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
network: Re-add the new machine for benteflork.

Our shiny new PX120-SSD build slave has arrived :-)

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
network: Move ultron's partitioning into machines.

This is machine-specific, so let's not clutter up network.nix too much
with that.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
common: Add iotop to systemPackages.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
pkgs/mongooseim: Add meta attributes.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
hydra: Assign a speedFactor of 2 to benteflork.

This is because benteflork has twice the RAM now (128 GB) and also has a
SSD built in, so let's prefer builds on this machine.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>