Fix issues with state management in slow situations (SOFIE-3803)

[nytamin]

About Me

This pull request is posted on behalf of the NRK.

Type of Contribution

This is a:

Bug fix

Current Behavior

Premise:

• Package Manager has quite a lot (1000) of expectations to handle
• An external service is handling requests really slow (several seconds)
• Let's say that all expecations are in NEW state

Package Manager starts to evaluate the expectations in batches, but because the handling is slow, it can take a LONG TIME to evaluate the states.
This means that it'll take quite a long time before an expectation reaches READY and PM will start working on it.
Note that PM will also only start working on 1 expectation (per worker) going back to evaluating all the states again.

New Behavior

When evaluating the states: After a certain amount of time, PM will skip ahead to evaluate the next state.
This means that in a slow situation, PM will get around to process READY expectations faster.

Testing Instructions

• Since the "slow" situation can be hard to get in, normal regression testing should do.

Other Information

Status

• PR is ready to be reviewed.
• The functionality has been tested by the author.
• Relevant unit tests has been added / updated.
• Relevant documentation (code comments, system documentation) has been added / updated.