Summary:
Add defaults for sslLdapFlag
Original Commit - https://github.com/yugabyte/yugabyte-db/commit/ee0a10e08bff9f874696553ccebb1f0168223407
Depends on - D39718

Test Plan: Manually tested LDAP DB sync API for ysql/ycql

Reviewers: agarg, asharma, #yba-api-review!

Reviewed By: agarg

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D39923