Experiment with "keep" annotation of helm (#416)

charts/ghost/Chart.yaml

charts/ghost/README.md

charts/ghost/templates/pvc.yaml

charts/ghost/values.yaml

charts/gitea/Chart.yaml

charts/gitea/README.md

charts/gitea/templates/pvc.yaml

charts/gitea/values.yaml

charts/nextcloud/Chart.yaml

charts/nextcloud/README.md

charts/nextcloud/templates/pvcs.yaml

charts/nextcloud/values.yaml

charts/remark42/Chart.yaml

charts/remark42/README.md

charts/remark42/templates/pvc.yaml

charts/remark42/values.yaml

charts/wordpress/Chart.yaml

charts/wordpress/README.md

charts/wordpress/templates/pvc.yaml

charts/wordpress/values.yaml