Self-review fix: the design proposal specifies
`name: authentication-config` and
`mountPath: /etc/kubernetes/authentication-config`, but the previous
revision had renamed both to `cozy-oidc-authn-config` and
`/etc/kubernetes/cozy-oidc` to dodge a collision with the volume
name used in `apiserver_authentication_test.yaml`. That test was
demonstrating the GENERIC user-supplied `extra*` passthrough — not
the OIDC use case — so rename the test fixture instead and restore
the design-spec names on the chart side.
The reservation guard against user-supplied volumes reusing
`authentication-config` only fires when `spec.oidc.mode` is not
None, so clusters with OIDC off retain the previous freedom to name
their own volumes anything.
Renames in `apiserver_authentication_test.yaml`: the user-supplied
volume name `authentication-config` becomes `tenant-byo-mount`; the
Secret name `tenant-authentication-config` and the apiserver flag
`--authentication-config=` are untouched.
Signed-off-by: Ivan Okhotnikov <ivan.okhotnikov@aenix.io>