Report template ValidationError in the Status section

[cuppett]

It's easy for templates to have errors. They currently pop in the controller log, but it would be good if the status section could reflect them for easier diagnosis when it appears nothing is happening. e.g.:

2022-01-02T13:36:51.312Z	ERROR	controller.stack	Reconciler error	{"reconciler group": "cloudformation.services.k8s.aws.cuppett.dev", "reconciler kind": "Stack", "name": "my-bucket", "namespace": "xyz", "error": "operation error CloudFormation: CreateStack, https response error StatusCode: 400, RequestID: c09efb1a-bc8c-4450-82e7-4f0c86b4ef2f, api error ValidationError: Template format error: Outputs name 'OBJECTSTORE_S3_BUCKET' is non alphanumeric."}