enable back kubelet_authorization_mode_webhook by default (#9662)

In 6db6c867, this was disabled becaue
kubesrpay gave too much permissions that were not needed. This commit
re-enable back this option by default and also removes the extra
permissions that kubespray gave that were in fact not needed.

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>