Allow each kubeConfigs entry to reference an externally-managed Secret
(externalSecret{name,key}) instead of embedding the kubeconfig in values.
Entries may reference different Secrets and mix inline with external ones.
The kubeconfigs volume becomes a projected volume; consumer mount paths are
unchanged. Each entry must set exactly one of kubeConfig, kubeConfigBase64,
or externalSecret.
Signed-off-by: sabsari <[email protected]>
Co-authored-by: Claude Opus 4.8 <[email protected]>