Previously, only guix-ci0.home.rekahsoft.ca was configured to use substitutes from custom
substitute servers, notably non-guix. This however is not favorable for other vms, as some
package substitutes are only available on custom substitute servers (eg. my own internal one,
non-guix, etc..).
This commit adjusts this, as well as reorganizes public key files.
* .guix/rekahsoft/guix-config/proxmox-vm-lvm-minimal.scm: Allow all personal laptops to build
packages for vms (by allowing their guix-daemon signing keys). Eventually, this should only
be ci machine/s.
* .pubkeys/guix-signing-key_dell-precision.pub: Dell laptop guix-daemon signing key
* .pubkeys/guix-signing-key_lenovo-t480s.pub: Lenovo t480s laptop guix-daemon signing
key (unchanged from before, where it stood in as the 'ci' machine until one is setup in my
local network).
