feat: add TenancyConfig to ACK Lambda Controller

[acaremrullah]

Issue #, if available: N/A

Description of changes:

Summary

Adds support for AWS Lambda's Tenant Isolation Mode feature to enable per-tenant isolation for multi-tenant applications.

Changes

SDK Update

• Upgraded github.com/aws/aws-sdk-go-v2/service/lambda from v1.75.0 to v1.87.1 to include TenancyConfig API support

API Types

• Added TenancyConfig type with TenantIsolationMode field to apis/v1alpha1/types.go
• Added TenancyConfig field to FunctionSpec in apis/v1alpha1/function.go

Controller Implementation

• Updated pkg/resource/function/sdk.go to handle TenancyConfig in:
  • newCreateRequestPayload - sets TenancyConfig on CreateFunction API call
  • sdkFind - reads TenancyConfig from GetFunction response
  • sdkCreate - reads TenancyConfig from CreateFunction response

CRD Updates

• Regenerated CRD manifests with TenancyConfig field
• Updated both config/crd/bases/lambda.services.k8s.aws_functions.yaml and helm/crds/lambda.services.k8s.aws_functions.yaml

Testing

• Added example function manifest test/e2e/resources/function_tenancy.yaml demonstrating tenant isolation configuration

Usage Example

apiVersion: lambda.services.k8s.aws/v1alpha1
kind: Function
metadata:
  name: my-function
spec:
  name: my-function
  runtime: python3.9
  handler: index.handler
  role: arn:aws:iam::123456789012:role/lambda-role
  code:
    s3Bucket: my-bucket
    s3Key: function.zip
  tenancyConfig:
    tenantIsolationMode: "PER_TENANT"

AWS Documentation

• https://aws.amazon.com/about-aws/whats-new/2025/11/aws-lambda-tenant-isolation-mode/
• https://docs.aws.amazon.com/lambda/latest/api/API_TenancyConfig.html

Notes

• TenancyConfig cannot be modified after function creation (AWS API limitation)
• Only available in regions except Asia Pacific (New Zealand), AWS GovCloud (US), and China

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

[ack-prow]

Hi @acaremrullah. Thanks for your PR.

I'm waiting for a aws-controllers-k8s 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[acaremrullah]

/assign @michaelhtm

[knottnt]

@acaremrullah Thanks for the PR! Left a few comments.

[acaremrullah]

/assign @knottnt

[acaremrullah]

Hi @knottnt @michaelhtm any chance to take a look for review this PR :) Thanks in advance

[acaremrullah]

Thank you for commit suggestions @knottnt. I pushed the changes with new generated files. Looking forward for your review.

[acaremrullah]

/assign @knottnt

Hey team, any chance to take a look this change if it's good to test?

[a-hilaly]

/ok-to-test

[michaelhtm]

Thanks for the contribution @acaremrullah
left a few comments below

[ack-prow]

@acaremrullah: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
lambda-verify-code-gen	7a95c30	link	true	/test lambda-verify-code-gen

Full PR test history. Your PR dashboard.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[acaremrullah]

@michaelhtm @knottnt I'm looking forward for your reviews :)

[acaremrullah]

/assign @michaelhtm

[a-hilaly]

Thank you @acaremrullah !
👍

[ack-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a-hilaly, acaremrullah

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[a-hilaly]

/cc @knottnt

[acaremrullah]

Hi team, when we can merge this to release the changes. Thanks in advance :)
cc: @knottnt @a-hilaly