Add priorityClassName values to operator and connect

[jonas-zipprick]

Re: #201

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[jonas-zipprick]

Q: Should I add an entry to CHANGELOG.md?

[SimonBarendse]

Thank you for the contribution! 🙌

Re: changelogs. If you could, yes please. @volodymyrZotov @edif2008 do we have guidance for the changelogs? As a next step outside this PR, could we update the contributing.md to mention the creation of a changelog and include any guidance we have for this?

[edif2008]

Functional review: ✅

I've validated that with the configuration of this PR both the Connect and the operator pods have the priority configured based on the priority class name passed in the Helm chart.

Code review: ✅

Things looks good from a configuration standpoint. I appreciate you putting the link to the concept in the documentation.

Other notes

PR approved! 🚀

Thank you so much for making this contribution to the Helm charts. 😊