Adds support for HashiCorp login with Kubernetes

vals does not yet support Kubernetes Authentication for Vault. We're adding this support to the controller. Also, it now checks whether the vault token is about to expire and renews it.

Helm chart fixes

Merge pull request #5 from digitalis-io/events-permissions

Tidied up service account permissions, added permission to write events

Adds support to sync secrets between namespaces

This release adds a new reference syntax of ref+k8s://namespace/secret#key which will allow you to grab a secret from a different namespace and keep it in sync as per defined TTL.

First release

This is the first release of the vals-operator.