Optimize calls to random endpoint of octopoes api

[jpbruinsslot]

Would it be possible to have the random endpoint of octopoes api return only ooi's of specific scan levels? The scheduler calls the random endpoint and considers all the returned ooi's this could also potentially be ooi's with a scan level of 0. In order to optimize the scheduler random population it can be helpful to limit the ooi's to a certain scan level.

[Lisser]

Added functionality in the feature/octopoes/filter-random-endpoint branch:

https://github.com/minvws/nl-kat-coordination/tree/feature/octopoes/filter-random-endpoint

Still need to write test, but if you could verify that it works for you, that'd be nice

[Lisser]

Tests done