K8SSAND-1859 ⁃ Apply DSE-specific authentication settings

[olim7t]

Currently in ApplyAuthSettings if auth is enabled in the cluster, we apply default authentication options to CassandraYaml, if the user didn’t specify anything.

The options being applied are fine for Cassandra, but not for DSE.

This means that authentication needs to be configured explicitly for DSE clusters.

If nothing is specified, we should apply the following for DSE clusters:

CassandraYaml:

authenticator: com.datastax.bdp.cassandra.auth.DseAuthenticator
authorizer: com.datastax.bdp.cassandra.auth.DseAuthorizer
role_manager: com.datastax.bdp.cassandra.auth.DseRoleManager

DseYaml:

authentication_options:
  enabled: true
authorization_options:
  enabled: true
role_management_options:
  mode: internal

┆Issue is synchronized with this Jira Task by Unito
┆friendlyId: K8SSAND-1859
┆priority: Medium