Allow to disable port on services.

[guillomep]

What this PR does / why we need it:

When using service as load balancer, if we setup ldap to be on secure port only we don't want to expose the insecure port. Currently there is no way to do that.

With this modification, users can enable or disable exposition of insecure or secure port on the service.

Default values keep the current behaviour.

Pre-submission checklist:

• [X] Did you explain what problem does this PR solve? Or what new features have been added?
• [X] Have you updated the readme?
• [X] Is this PR backward compatible? This is backward compatible

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[guillomep]

Not stale

[guillomep]

It was not stale