apps: fix velero snapshots

[Eliastisys]

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What does this PR do / why do we need this PR?

...

• Fixes #

Information to reviewers

Fixes psps and netpols for the pods included in the velero snapshot machinery. Something changed along the line in how they work and since we don't have a test scenario that does a snapshot, we managed to miss it. Will add more tests to cover this.

Checklist

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  • The public documentation required an update - [link to change](set-me)
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[viktor-f]

Tested on evroc and it worked there 🚀

[simonklb]

Will add more tests to cover this.

Keeping you to that promise! 😄