Interpolation in mutation hooks for namespace or other parameters

[ajohnstone]

Describe the solution you'd like
Interpolation in mutation hooks. Is this possible today?

apiVersion: mutations.gatekeeper.sh/v1
kind: Assign
metadata:
  name: demo-dns-config
spec:
  applyTo:
  - groups: [""]
    kinds: ["Pod"]
    versions: ["v1"]
  match:
    scope: Namespaced
    kinds:
    - apiGroups: ["*"]
      kinds: ["Pod"]
  location: "spec.dnsConfig"
  parameters:
    assign:
      value:
        nameservers:
        - 1.2.3.4
        searches:
        - <namespace>.svc.cluster.local
        - svc.cluster.local
        - cluster.local

replace namespace with the namespace in question the mutation for the pod that it is occcurring on.

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Gatekeeper version:
• Kubernetes version: (use kubectl version):

[maxsmythe]

Unfortunately not possible today, but such behavior is compatible with convergence requirement if the values interpolated are immutable (namespace, name)