add:(admission-webhooks) ability to set securityContext

[ybelMekk]

helm version: 3.9.2
ingress-nginx version: ingress-nginx-4.2.3.tgz

What this PR does / why we need it:

Stumbled in to this when working with kyverno and enforced strict policies.

Kyverno and using strict policy configuration, job create for ingress-nginx-admission-create fails with policies require-drop-all. Adding the ability to configure containers in webhooks create and patch from helm values.

k describe job loadbalancer-ingress-nginx-admission-create

resource Pod/my-namespace/loadbalancer-ingress-nginx-admission-create-kvpl5 was blocked due to the following policies

disallow-capabilities-strict:
  require-drop-all: 'validation failure: Containers must drop `ALL` capabilities.'
  Warning  FailedCreate  14s  job-controller  Error creating: admission webhook "validate.kyverno.svc-fail" denied the request:

NONE

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• CVE Report (Scanner found CVE and adding report)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

How Has This Been Tested?

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added unit and/or e2e tests to cover my changes.
• All new and existing tests passed.
• Added Release Notes.

Does my pull request need a release note?

Any user-visible or operator-visible change qualifies for a release note. This could be a:

• CLI change
• API change
• UI change
• configuration schema change
• behavioral change
• change in non-functional attributes such as efficiency or availability, availability of a new platform
• a warning about a deprecation
• fix of a previous Known Issue
• fix of a vulnerability (CVE)

No release notes are required for changes to the following:

• Tests
• Build infrastructure
• Fixes for unreleased bugs

For more tips on writing good release notes, check out the Release Notes Handbook

update helm values with the ability to set securityContext for admission-webhooks create and patch job containers

[k8s-ci-robot]

Hi @ybelMekk. 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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[ybelMekk]

@longwuyuan, fixed the PR, you have time for a review? 😅

[strongjz]

Please update the release notes at the bottom of the PR description.

/kind feature
/priority backlog
/triage accepted
/ok-to-test

[ybelMekk]

Please update the release notes at the bottom of the PR description.

/kind feature /priority backlog /triage accepted /ok-to-test

Fixing!

[strongjz]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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