* Don't validate external credential type
The operator shouldn't try to fetch credentials that have their types
defined as `external` - that means that credentials are supplied
externally, without using k8s secrets.
* Docs: Add example of `external` credential type
* Skip kube-api-access volume comparison
This hotfixes the incompatibility between the Operator and Kubernetes
1.21.
Kubernetes 1.21 started adding a new volume named
"kube-api-access-<random-suffix>" and that broke the comparison
function and resulted in an infinite loop.
* Fix WATCH_NAMESPACE in helm chart
When applying the chart, the operator will now watch the correct
namespace. This required changes in roles and role bindings so that
the operator has access to both namespaces.
* Use Role instead of ClusterRole
Mitigates the risk of restrictions in creating ClusterRole in
multitenant k8s clusters.
* Update configuration-as-code version to 1.47
This allows the user to use keys other than PEM encoded RSA. ed25519
is often recommended to be used if it's supported. Using this
algorithm implies the use of OpenSSH key format in ssh-keygen.