Dropping LDAP from the supported development persistences

[moabu]

It is a sad day carrying a hard outcome. The Janssen Project at the LinuxFoundation has decided to remove LDAP from the supported development persistence layer.

#9653

Supported persistences at the moment are:

• Couchbase
• MySQL
• PostgreSQL
• Google Spanner

[moabu]

Dropping Couchbase and Spanner from the supported persistences#10222