So that `<kind>/<name>` flags can be supplied as:
* `secret/foo`
* `Secret/foo`
* `SeCrEt/foo`
But result in: `Secret/foo`.
Signed-off-by: Hidde Beydals <hello@hidde.co>
This includes various bug fixes, especially around the area of missing
names for `<kind>/<name>` formats.
Signed-off-by: Hidde Beydals <hello@hidde.co>