Add Heat parameter EnableMysqlAuthEd25519, which when set to
true, drives puppet-tripleo in configuring MySQL user credentials
to require ed25519-based authentication (auth_ed25519) instead
of the default SHA1-based authentication (mysql_native_password).
This works starting with libsodium >= 1.0.18,
python3-pynacl >= 1.3.0-6.el8.rdo.1,
python3-PyMySQL >= 0.9.3-2.el8.rdo.1
Change-Id: I4f3d38ea70d48589be3e1b7f5eea96c358b44560
Partial-Bug: #1866093