[DRAFT] YAML installaton of operator in nightly + asserts

[domhanak]

If you are interested please check and provide feedback @jakubschwan

Updates the framework to pull YAML from a kie-tools adds overrides from variables (see script) and then asserts basic needs after installation.

Needs some love but in general is good and works.

Steps in the tests:

    When Postgres is deployed
    When SonataFlowPlatform with DataIndexAndJobsService using Postgres is deployed
    When SonataFlow callbackstatetimeouts example is deployed
    Then SonataFlow "callbackstatetimeouts" has the condition "Running" set to "True" within 5 minutes
    Then HTTP POST request on non-dev SonataFlow "callbackstatetimeouts" is successful within 1 minute with path "callbackstatetimeouts", expectedResponseContains '"workflowdata":{"message":"Hello"}"' and body:
    """json
    {"message": "Hello"
    }
    """

are not really needed but just wanted to ensure whole path works.