cockpit: need instructions

[Louson]

The cockpit recipe offers a lot of packages. Some are optional but some seem to be required. Can we add some explanations, at least for a minimal configuration ?

PACKAGES =+ " \
    ${PN}-pcp \
    ${PN}-realmd \
    ${PN}-tuned \
    ${PN}-shell \
    ${PN}-systemd \
    ${PN}-users \
    ${PN}-kdump \
    ${PN}-sosreport \
    ${PN}-storaged \
    ${PN}-networkmanager \
    ${PN}-machines \
    ${PN}-selinux \
    ${PN}-playground \
    ${PN}-docker \
    ${PN}-dashboard \
    ${PN}-bridge \
    ${PN}-ws \
    ${PN}-desktop \
"