Clean up sonobuoy testing

Fix versioning for containerd & crictl

install.sh: Cleanup of quotes

Add private registry support to containerd

Fix cert rotate function

Update sonobuoy to v0.16.1 and use e2e go runner

install.sh: Use built-in shell functionality instead of awk

Signed-off-by: Joakim Roubert <joakimr@axis.com>

Upgrade k3s-root to v0.3.0

Cleanup build script

Separate version flags and build CNI plugins in a temp directory.

Separate CNI plugin dependencies

Because:
- Current CNI plugins produces an error on Raspbian:
  `failed to create bridge \"cni0\": could not add \"cni0\": operation not supported"`
- Dependencies for CNI plugins may interfere with containerd dependencies.

This change will compile and download CNI plugins separately, and will
downgrade CNI plugins to v0.7.6 for compatability with armv7.

Tweak the intro message portion.

Tweak and make an addition to the bug report.
Remove request for screenshots.

Upgrade to go v1.13.1

Add default storage class

Certificate Rotation

Signed-off-by: Joakim Roubert <joakimr@axis.com>

Signed-off-by: Joakim Roubert <joakimr@axis.com>

Initial encrypted network support