[helm] when operator helm chart optionally creates CR, it puts the annotation in the wrong spot

[jmazzitelli]

run this:

$ make build-helm-charts
$ helm install \
   --set cr.create=true \
   --set cr.namespace=istio-system \
   --namespace kiali-operator \
   --create-namespace \
   kiali-operator \
   _output/charts/kiali-operator-*-SNAPSHOT.tgz

and notice the operator verbosity annotation is in the wrong spot - it should be under metadata:

$ kubectl get kiali kiali -n istio-system -o yaml
annotations:
  ansible.sdk.operatorframework.io/verbosity: "1"
apiVersion: kiali.io/v1alpha1
kind: Kiali
metadata:
  annotations:
    meta.helm.sh/release-name: kiali-operator
    meta.helm.sh/release-namespace: kiali-operator
...

Fix the helm template so the annotation is in the correct spot.

While we are at it, allow the user to add their own annotations if needed via --set cr.annotations.NAME=VALUE