This commit makes the mount of /usr/src optional in the Helm chart, and
removes it from the kustomization. Reason is that some systems do not
have a /usr/src (such as Talos) *and* have a R/O filesystem. Since
/usr/src is optional per FHS 3.0, NFD should not assume its presence.
Signed-off-by: Jorik Jonker <jorik@kippendief.biz>
Replicates nfd-daemonset-combined.yaml.template.
In addition to the overlay we need to add a separate set of patches
under components/common in order to handle the double-container pod.
Implement functionality virtually replicating deployment templates for
nfd-master and nfd-worker daemonset (nfd-master.yaml.template and
nfd-worker-daemonset.yaml.template) by adding a kustomize overlay named
"default".
We split the resources into multiple bases (rbac, master and
worker-daemonset) so that relevant parts are re-usable in
other deployment scenarios added later (e.g. "one-shot job", and
"combined daemonset").
This patch adds one component (components/common) doing the required
kustomization for the example deployment.
