Depending on the Kubernetes version, the following warning is reported
regulary:
> Warning: policy/v1beta1 PodSecurityPolicy is deprecated in v1.21+,
> unavailable in v1.25+
The warning is written to stderr, so skipping AlreadyExists or NotFound
is not sufficient to trigger a retry. Ignoring '^Warning:' in the stderr
output should prevent unneeded failures while deploying Rook or other
components.
Signed-off-by: Niels de Vos <ndevos@redhat.com>