cnf_manager: Refactor sample_setup

[kosstennbl]

Description

Change instalation time measurement method to reduce complexity Extract waiting for all resources and liveness_time calculation Extract elapsed time config map creation Add comments as markers for different stages of sample setup

Markers are to be removed once method is simplified enough.

Issues:

Refs: #2036

How has this been tested:

Successfully built

Types of changes:

Refactor

Checklist:

Documentation No documentation updates required.