Also add my key to local secrets for the moment because otherwise localdev
grid cannot build itself :/

Secure swap space and have 8 GB of swap consistently on all machines.

Closes privatestorageops#351

See merge request !103

Rationalize system host names

Closes #67

See merge request !110

There is no swap to use but (a) try the setting anyway and (b) maybe there
will be at some point.

See, it makes more sense.

we deleted it already but it got brought back

Regularize (somewhat) the definition of grids for Morph

See merge request !109

Also this no longer needs to be rec

It is no longer required to add IP addresses to the Vagrant-generated ssh
configuration because the Vagrant-configured hostnames now match up with the
names morph will try to use to connect to the VMs.

Just require hostName and domain instead of an extra publicIPv4 option.  Leave
behind a similar option, `publicAddress`, just in case it needs to be
overridden at some point, but stop supplying a value for it anywhere.

Maybe later?