add TLS fix

[wejdross]

Summary

• Fixing TLS settings
• For context: there is a difference if we initialize nested map inside some struct and single field. I had to add properties entry to generator to make it work.
• Currently our XVSHNPostgreSQL receives new struct inside spec.parameters.service and has a form:

        repackEnabled: true
        serviceLevel: besteffort
 ++  tls:
 ++      enabled: true
        vacuumEnabled: false

• test cases I did:
  ** new instance
  ** existing instance during migration from master branch
  ** existing instances with previous fixes and partially applied fields

[zugao]

I don't understand what is the problem.

[wejdross]

Our Appcat's comp-function is reading field spec.parameters.service.tls.enabled and based on that it sets correct value for SGcluster's .spec.ssl.enabled. But this field must be present, otherwise it'll default to false inside comp function because of nil.

This PR ensures that after I deploy this change to clusters every xrd of XVSHNPostgreSQL would update it's spec and set new field .tls.enabled: true. Without this change after deployment of my previous PR, instances that were not created with tls settings in claim resulted in ssl.enabled: false because of nil value for TLS settings in xrd.

EDIT:
the most important thing is to initialize nested map: https://github.com/vshn/appcat/pull/278/files#diff-7fa21cdde94769399ac72b9c4e56d402f582b75d502f8b81769f276e529eb303R17

afterwards, I defaults settings of TLS to default={} and enabled is by default=true. This ensures that our PostgreSQL by default encrypts connections.

[zugao]

LGTM

[zugao]

Our Appcat's comp-function is reading field spec.parameters.service.tls.enabled and based on that it sets correct value for SGcluster's .spec.ssl.enabled. But this field must be present, otherwise it'll default to false inside comp function because of nil.

I guess if we had used disabled: false instead of enabled: true as default we would not have this problem now.

[zugao]

Don't forget to squash your commits!