In testing K8s 1.21.8 used less CPU than 1.21.3, so we are moving to
the newer version.
This has been booted in vbox and a basic pod has been started.
A full regression will be performed.
Depends-On: https://review.opendev.org/c/starlingx/compile/+/824802
Partial-Bug: 1957994
Signed-off-by: Chris Friesen <chris.friesen@windriver.com>
Change-Id: I64e4a64c90ef7591aeee52742dfcba9fdd8e5063