Update an rc-update call to only be made if running openrc instead of
all gentoo profiles (systemd does not have rc-update).
Add python3-pyyaml package mappings.
Update serial console to support multiple arches.
Update open-iscsi and open-isns keywords (looks like upstream merged
some musl fixes).
Update the kernel and initramfs file name globs for the
gentoo-kernel-bin usage.
Change-Id: I259bffed3a3e3f92be2210ead6bdfa383917d457
Signed-off-by: Matthew Thode <mthode@mthode.org>
97e4627d87