Bump bind-operator to v0.2.0 and deploy companion TSIG API

v0.2.0 adds the BindTSIGAPI CRD and companion API that
vault-plugin-secrets-bind-tsig calls to create, rotate and delete TSIG
keys. This rolls the operator forward and deploys an API instance.

- Bump the operator image and the pulled CRD bundle to v0.2.0.
- Broaden the operator ClusterRole with deployments, serviceaccounts and
  roles/rolebindings so the BindTSIGAPI reconciler can deploy the API and
  its namespaced RBAC.
- Add a BindTSIGAPI (bind-tsig-api) in bind-internal; the operator
  reconciles it into a Deployment, Service, ConfigMap, master-token Secret
  and RBAC. Keys are created in bind-internal alongside the authoritative
  cluster.
- Add the generated kubeconform schema for BindTSIGAPI.

apps/base/bind-system/kustomization.yaml

@@ -6,6 +6,6 @@ resources:
   - namespace.yaml
   # CRDs are pulled from the bind-operator repo at the matching tag rather than
   # vendored here, so they never drift from the operator.
-  - https://git.unkin.net/unkin/bind-operator/raw/tag/v0.1.5/config/crd/install.yaml
+  - https://git.unkin.net/unkin/bind-operator/raw/tag/v0.2.0/config/crd/install.yaml
   - rbac.yaml
   - deployment.yaml