Discover mysql and mariadb discovers the client binary insted of the server binary

[KhatibMechentel]

Hello.
The functions discover_mysql_in_pod and discover_mariadb_in_pod in the CVK8SDiscoverDB.sh script dicover the mysql binary and not the server one.
For example, if we have a Wordrpress application, we will try to create cvtasks and cvtasksets for the wordpress pod in addition to the mariadb one.
The proper way is to test mysqld --version, type mysqld, and which mysqld.