Right now we're just ignoring the global env vars passed, which is not
the expected behaviour, mainly as we're duplicating a bunch of env vars
passed to the preInstall / postUninstall payloads.

Let's ensure we actually read the global ones and take those into
consideration as well.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

Otherwise we may end up in situations where users will simply try to add
/ replace an environment variable via kustomize and will end up with the
operator broken as this env var would simply be vanished. :-/

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

Otherwise we may hit issues in in cases where folks will use kustomize
to add / replace one the values, as kustomize just overrides the whole
set of env vars.

We need to keep those in sync with whatever is set in the configs, but
this shouldn't be as much of a burden as leaving it for the user to do
so.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

In theory those could very well be set only for the pre-install /
post-uninstall, but that doesn't make much sense as the user experience
on setting those would be to having to set those twice.

With the user experience in mind, let's just move them to the global env
vars and let the user set / kustomize them only once.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

The majority of the managed kubernetes solutions are already relying on
a new enough (v1.7+) version of containerd.

Fixes: confidential-containers#272

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

With the new requirement of containerd 1.7+, the operator.sh was adapted
to enable the operator to install containerd in case the system's
installed version is less than or equal to 1.6.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>

On Ubuntu 22.04 installs docker from the distro and consequently
containerd version 1.7. This ways we cover the default installation case where
INSTALL_OFFICIAL_CONTAINERD=false.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>