Installing as a subchart fails on the second installation because of hardcoded webhook name

[heruan]

Having CNPG as a subchart, i.e.

dependencies:
  - name: cloudnative-pg
    version: ~0.22.0
    repository: https://cloudnative-pg.github.io/charts

if fails with this error when installing the chart a second time with a different release name:

$ helm install foo ./umbrella-chart -ns foo
$ helm install bar ./umbrella-chart -ns bar

Error: INSTALLATION FAILED: Unable to continue with install: MutatingWebhookConfiguration "cnpg-mutating-webhook-configuration"
in namespace "" exists and cannot be imported into the current release: invalid ownership metadata; annotation validation error:
key "meta.helm.sh/release-name" must equal "bar": current value is "foo"; annotation validation error:
key "meta.helm.sh/release-namespace" must equal "bar": current value is "foo"

This would be fixed if the name of the webhook would be prefixed by the release name instead of being hardcoded in

charts/charts/cloudnative-pg/templates/mutatingwebhookconfiguration.yaml

Lines 18 to 21 in 238f826

	apiVersion: admissionregistration.k8s.io/v1
	kind: MutatingWebhookConfiguration
	metadata:
	name: cnpg-mutating-webhook-configuration

as it happens for example for CertManager webhooks.

[heruan]

Same for the validating webhook:

charts/charts/cloudnative-pg/templates/validatingwebhookconfiguration.yaml

Lines 18 to 21 in 238f826

	apiVersion: admissionregistration.k8s.io/v1
	kind: ValidatingWebhookConfiguration
	metadata:
	name: cnpg-validating-webhook-configuration