Bank-Vaults webhook installation

commands

# Next, install the mutating webhook with Helm into its own namespace (to bypass the catch-22 situation of self mutation)
$ helm upgrade --namespace vault-infra --install vault-secrets-webhook banzaicloud-stable/vault-secrets-webhook --wait
Release "vault-secrets-webhook" does not exist. Installing it now.
NAME: vault-secrets-webhook
LAST DEPLOYED: Mon Mar 29 13:32:21 2021
NAMESPACE: vault-infra
STATUS: deployed
REVISION: 1
TEST SUITE: None

# Check if all pods are running
$ kubectl get pods --namespace=vault-infra
NAME                                     READY   STATUS    RESTARTS   AGE
vault-operator-7ff96c7fcb-2d277          1/1     Running   0          57m
vault-secrets-webhook-65d8b89f98-68f6j   1/1     Running   0          46s
vault-secrets-webhook-65d8b89f98-bq9sc   1/1     Running   0          46s

# Check mutatingwebhookconfigurations
$ kubectl get mutatingwebhookconfigurations.admissionregistration.k8s.io
NAME                    WEBHOOKS   AGE
vault-secrets-webhook   2          61s