- Add antergos-next-keyring to basestrap install list so keyring files
are available in the target early (uses host keyring which already
trusts the Antergos key)
- Add antergos-next to keyrings list so pacman-key --populate imports
the Antergos key into the target's keychain
- try_remove artix-release so antergos-release doesn't conflict when
packages module runs later (replaces= PKGBUILD fix also pushed, but
this works regardless of rebuild)
- Fix remove() method in basestrap main.py: was missing --root <target>,
causing removals to operate on the HOST instead of the target