helm feat: add namespace overrides

[jasine]

What this PR does / why we need it:

add namespace override for multi-namespace deployments in combined charts #8663

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @jasine. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[tao12345666333]

/assign

Thanks

[niwoerner]

Would it make sense to truncate the namespace to a max length of 63 chars with adding something like that: | trunc 63 | trimSuffix "-" ?

[tao12345666333]

Thanks

/ok-to-test

[strongjz]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jasine, strongjz

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• charts/ingress-nginx/OWNERS [strongjz]

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[Gacko]

What about those lines: https://github.com/kubernetes/ingress-nginx/pull/10539/files#diff-dca78d9a1e610665d7ae4e52c1b8e08633fa7a5955530a2b44fd7fe49707290fR9-R10

Gonna propose a follow-up to fix this and some other minor issues introduced by this PR.

[tao12345666333]

@Gacko Good catch, thanks!

[strongjz]

/cherry-pick release-1.9

[k8s-infra-cherrypick-robot]

@strongjz: new pull request created: #10699

In response to this:

/cherry-pick release-1.9

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