v1alpha controller manager running out of memory

[andmat900]

Description

It has been noticed that v1alpha controller manager may run out of memory, which is caused by big testrun objects.

We need to:

• optimize memory allocation: find optimal values for limits and requests of the controller
• optimize memory usage: slim down testrun objects / remove them when they are not used etc.

Additional Context

No response

Logs

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Expected Behavior

ETOS v1alpha should be able to handle bigger testrun objects in larger quantities.

Steps To Reproduce

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The version of this project/repo, if applicable

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The version/edition of the Eiffel Protocol used, if applicable

main

[t-persson]

We should investigate if we can customize the cache in controller runtime instead of using the default.
This issue talks a bit about the exact scenario that we are hitting kubernetes-sigs/controller-runtime#2570