Adopt Deployment Pod resources into a Helm install

adopt_helm_deployment_pod_resources.sh

# Can use https://gist.github.com/magickatt/e7885f748c2ecd5bb88dd64828b30fbf
# to adopt the Deployment resources themselves

NAME=test
NAMESPACE=default

kubectl get -n $NAMESPACE deployment -o name \
  | xargs -I % kubectl patch -n $NAMESPACE % -p \
  '{"spec": {"template":{"metadata":{"annotations":{"meta.helm.sh/release-name": "$NAME"}}}}}'

kubectl get -n $NAMESPACE deployment -o name \
  | xargs -I % kubectl patch -n $NAMESPACE % -p \
  '{"spec": {"template":{"metadata":{"annotations":{"meta.helm.sh/release-namespace": "$NAMESPACE"}}}}}'

kubectl get -n $NAMESPACE deployment -o name \
  | xargs -I % kubectl patch -n $NAMESPACE % -p \
  '{"spec": {"template":{"metadata":{"labels":{"app.kubernetes.io/managed-by": "Helm"}}}} }'

# Roll all the Deployments so the Pod resources are refreshed
for DEPLOY in `kubectl get deployments -n $NAMESPACE | tail -n +2 | cut -d ' ' -f 1`; do
kubectl rollout restart deployments/$DEPLOY -n $NAMESPACE
done