Announcement: Ubuntu 22.04 and package installation

[lsm5]

Also update getting-started/installation.md with a NOTE for existing Kubic users.

Signed-off-by: Lokesh Mandvekar lsm5@fedoraproject.org

@TomSweeneyRedHat @rhatdan @vrothberg PTAL.

[TomSweeneyRedHat]

This LGTM, but it won't show up on the home page unless you add a "New" md file too. In the _posts dir, look for a {date}_new.md example

[rhatdan]

LGTM, but update it to match @TomSweeneyRedHat suggestion and then merge.

[lsm5]

Done, PTAL

[lsm5]

hang on

[lsm5]

ready PTAL