update KMS guide to work with latest KES changes (#9498)
update KMS guide to work with latest KES changes (#9498)

This commit updates the KMS guide to reflect the
latest changes in KES. Based on internal design
meetings we made some adjustments to the overall
KES configuration.
This commit ensures that the KMS guide contains
a working KES demo-setup with Vault.
aead/minio,donatello/minio,krisis/minio,aead/minio,harshavardhana/minio,harshavardhana/minio,minio/minio,NitishT/minio,harshavardhana/minio,krisis/minio,vadmeste/minio,aead/minio,minio/minio,vadmeste/minio,aead/minio,aead/minio,balamurugana/minio,NitishT/minio,harshavardhana/minio,NitishT/minio,aead/minio,harshavardhana/minio,harshavardhana/minio,donatello/minio,NitishT/minio,aead/minio,balamurugana/minio,harshavardhana/minio,harshavardhana/minio,aead/minio