docs: webhook configurations for upgrade to v1

[drmorr0]

Description

Adding a note to the upgrade docs for people not using helm to upgrade that some manual cleanup of the webhook configuraitons may be necessary. There are a number of closed issues (e.g. #7134, #6982, #6879) where it seems like people are running into this so seems like maybe a helpful note to have.

How was this change tested?
Built the docs locally:

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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[jonathan-innis]

Adding a note to the upgrade docs for people not using helm to upgrade that some manual cleanup of the webhook configuraitons may be necessary

I'm still surprised why folks are running into this -- I'm not against adding this to the docs, but my understanding is that if you are running with prune, then the fix that dropped the ownerReferences should ensure that these webhooks don't stick around after the upgrade

I'm realizing that helm template doesn't help you in this scenario; though, this seems like a dangerous thing to use if we were to just drop something down the line -- this could be leaked. Note makes sense though. Thanks for adding!

[jonathan-innis]

LGTM 🚀

[coveralls]

Pull Request Test Coverage Report for Build 13450088284

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 65.215%

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Files with Coverage Reduction	New Missed Lines	%
pkg/fake/utils.go	2	94.81%

Totals
Change from base Build 13447487814:	-0.02%
Covered Lines:	5977
Relevant Lines:	9165

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💛 - Coveralls