Fix Vault logging messages

Uses different i18n key for password prompt and password confirmation
prompt.

Current english output is incorrect as the WFLYSEC is prepended to the
again message:

WFLYSEC0052: Enter Keystore passwordWFLYSEC0061:  again:

More generally, language do not necessarily put their "again" equivalent
at the end of the sentence. E.g. in French, that would be "Saisir à
nouveau votre mot de passe" where "a nouveau" (aka again) is in the
middle of the sentence
use NONE id for vault tool's messages

to prevent display WFLYSECXXX before each message
Merge pull request #6339 from jmesnil/fix_vault_logging_message

Fix Vault logging messages