//
  // The minimum valid value for expirationSeconds is 600, i.e. 10 minutes.
  //
  // +optional
  optional int32 expirationSeconds = 8;

  // allowedUsages specifies a set of usage contexts the key will be
  // valid for.
  // See:
  // 	https://tools.ietf.org/html/rfc5280#section-4.2.1.3
  // 	https://tools.ietf.org/html/rfc5280#section-4.2.1.12
  //
  // Valid values are:

  //
  // +optional
  optional bool podInfoOnMount = 2;

  // volumeLifecycleModes defines what kind of volumes this CSI volume driver supports.
  // The default if the list is empty is "Persistent", which is the usage defined by the
  // CSI specification and implemented in Kubernetes via the usual PV/PVC mechanism.
  //
  // The other mode is "Ephemeral". In this mode, volumes are defined inline inside the pod spec

```

2) `istio-cni` chart installs the CNI plugin. This should be installed after the `base` chart and prior to `istiod` chart. Need to add `--set pilot.cni.enabled=true` to the `istiod` install to enable its usage.

```console
helm install istio-cni -n kube-system manifests/charts/istio-cni --set profile=openshift
```

3) `istio-control/istio-discovery` chart installs a revision of istiod.

```console

.PHONY: show.env show.goenv

show.env: ; $(info $(H) environment variables...)
	$(Q) printenv

show.goenv: ; $(info $(H) go environment...)
	$(Q) $(GO) version
	$(Q) $(GO) env

# show makefile variables. Usage: make show.<variable-name>
show.%: ; $(info $* $(H) $($*))
	$(Q) true

#-----------------------------------------------------------------------------
# Target: custom resource definitions

// ---
// New uses of this type are discouraged because of difficulty describing its usage when embedded in APIs.
//  1. Ignored fields.  It includes many fields which are not generally honored.  For instance, ResourceVersion and FieldPath are both very rarely valid in actual usage.
//  2. Invalid usage help.  It is impossible to add specific help for individual usage.  In most embedded usages, there are particular

  //
  // +optional
  optional bool podInfoOnMount = 2;

  // volumeLifecycleModes defines what kind of volumes this CSI volume driver supports.
  // The default if the list is empty is "Persistent", which is the usage defined by the
  // CSI specification and implemented in Kubernetes via the usual PV/PVC mechanism.
  //
  // The other mode is "Ephemeral". In this mode, volumes are defined inline inside the pod spec

github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
github.com/howardjohn/unshare-go v0.4.0 h1:gqPNhMC5Ng4sJPv3XfIxKDjE7cyXRsRh+sPFPbesTgo=
github.com/howardjohn/unshare-go v0.4.0/go.mod h1:cJjyFAN6qTA70ovC2VR23iAZuJ8X3J/ibAbT693pJ8g=
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=

  // allowedUnsafeSysctls is a list of explicitly allowed unsafe sysctls, defaults to none.
  // Each entry is either a plain sysctl name or ends in "*" in which case it is considered
  // as a prefix of allowed sysctls. Single * means all unsafe sysctls are allowed.
  // Kubelet has to allowlist all allowed unsafe sysctls explicitly to avoid rejection.
  //
  // Examples:

  // MatchConstraints specifies what resources this policy is designed to validate.
  // The AdmissionPolicy cares about a request if it matches _all_ Constraints.
  // However, in order to prevent clusters from being put into an unstable state that cannot be recovered from via the API
  // ValidatingAdmissionPolicy cannot match ValidatingAdmissionPolicy and ValidatingAdmissionPolicyBinding.
  // Required.
  optional MatchResources matchConstraints = 2;