Kqueen default variables refactoring

-  Move env-vars on stack level to create env-dile and to avoid

```api.environment.VAR must be a string, number or null```
- Change default value for haproxy API port to avoid isses with
port duplicates (docker registry)

related-bug: https://mirantis.jira.com/browse/PROD-19571

Change-Id: Ic4154614c26b361c0621aa8e188c6d872d30ff0b
3 files changed