feat: add annotations to operator

[jiuker]

feat: add annotations to operator

[shtripat]

LGTM. Verified.

$ kubectl get deployments/minio-operator -n minio-operator -oyaml | yq '.metadata.annotations' 
deployment.kubernetes.io/revision: "1"
kubectl.kubernetes.io/last-applied-configuration: |
  {"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{"operator.min.io/authors":"MinIO, Inc.","operator.min.io/license":"AGPLv3","operator.min.io/support":"https://subnet.min.io"},"labels":{"app.kubernetes.io/instance":"minio-operator","app.kubernetes.io/name":"operator"},"name":"minio-operator","namespace":"minio-operator"},"spec":{"replicas":2,"selector":{"matchLabels":{"name":"minio-operator"}},"strategy":{"type":"Recreate"},"template":{"metadata":{"annotations":{"operator.min.io/authors":"MinIO, Inc.","operator.min.io/license":"AGPLv3","operator.min.io/support":"https://subnet.min.io"},"labels":{"app.kubernetes.io/instance":"minio-operator","app.kubernetes.io/name":"operator","name":"minio-operator"}},"spec":{"affinity":{"podAntiAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":[{"labelSelector":{"matchExpressions":[{"key":"name","operator":"In","values":["minio-operator"]}]},"topologyKey":"kubernetes.io/hostname"}]}},"containers":[{"args":["controller"],"env":[{"name":"MINIO_CONSOLE_TLS_ENABLE","value":"off"},{"name":"OPERATOR_STS_ENABLED","value":"on"}],"image":"docker.io/minio/operator:annon","imagePullPolicy":"IfNotPresent","name":"minio-operator","resources":{"requests":{"cpu":"200m","ephemeral-storage":"500Mi","memory":"256Mi"}},"securityContext":{"runAsGroup":1000,"runAsNonRoot":true,"runAsUser":1000}}],"serviceAccountName":"minio-operator"}}}}
min.io/operator: annon <<===========
operator.min.io/authors: MinIO, Inc.
operator.min.io/license: AGPLv3
operator.min.io/support: https://subnet.min.io