ea730551d4
Closes a pre-existing gap where the ImageUpdateAutomation SigningKey
field was reachable only by hand-editing the rendered YAML. The two
new flags --signing-key-secret and --signing-key-type populate the
spec.git.commit.signingKey block directly.
When --signing-key-secret is set without --signing-key-type, the run
function fills in 'gpg' explicitly so the rendered YAML matches what
the apiserver would default it to. Validation rejects --signing-key-
type without --signing-key-secret and rejects values outside
{gpg, ssh}, using the typed SigningKeyType constants exported from
the image-automation-controller API so the validator and populator
share a single source of truth.
Signed-off-by: Hidde Beydals <hidde@hhh.computer>