Add configuration for JWT authentication

[tomach]

Summary of changes

This change enables JWT authentication for crateDB version 5.7.2 and above

• adds the following settings to the crate command in the StatefulSet

                "-Cauth.host_based.config.98.method": "jwt",
                "-Cauth.host_based.config.98.protocol": "http",
                "-Cauth.host_based.config.98.ssl": "on",

• sets the JWT config for the admin user when a new cluster is deployed

• restricts access for the admin user to the gc schema

• updates the JWT config for the admin user after upgrading (or restoring a snapshot) to a version that supports JWT by running an ALTER USER with crash

Checklist

• Link to issue this PR refers to: https://github.com/crate/cloud/issues/1912
• Relevant changes are reflected in CHANGES.rst
• Added or changed code is covered by tests
• Documentation has been updated if necessary
• Changed code does not contain any breaking changes (or this is a major version change)

[Taliik]

lgtm