RHCLOUD-35562: Update compose files to be compatible with podman-compose on Fedora

[catastrophe-brandon]

Updates:

1. Referred to database container by container hostname (podman uses a "trick" to resolve these hostnames, so they need to be used consistently)
2. Added a hard-coded sleep before unleash_web tries to interact with postgres db. (health checks are no longer honored by compose as part of "depends_on"). See Fails to handle the service_healthy condition of a depends_on element containers/podman-compose#866 for details.
3. Various ports are configurable via .env:
   a. UNLEASH_WEB_PORT
   b. ZOOKEEPER_CLIENT_PORT
   c. KAFKA_JMX_PORT
   d. KAFKA_CLIENT_LISTEN_PORT
   e. KAFKA_CLIENT_LISTEN_PORT_2

Note: Configuration via env only applies to the external port configuration of the pod. Env file changes will not affect pod internal port configurations for components. These changes were made to help devs prevent collisions with listen ports that may be in-use on their local systems.

[Hyperkid123]

@catastrophe-brandon we will probably also need some env variables for the WebPort and Metrics ports configurations. The defaults can be occupied and my system is dying on that with these changes.