Added ISO Policy for iso-e and iso-f in example docs, and updated integration test script based on *testing already done*

[orsenthil]

Issue

Description

We had validated the new ISO regions for AWS Load Balancer Controller using these instructions

In a docker container

ARG LOAD_BALANCER_CTRL_DIR=/app/repository/aws-load-balancer-controller
RUN git clone https://github.com/jaydeokar/aws-load-balancer-controller.git $LOAD_BALANCER_CTRL_DIR && \
  cd $LOAD_BALANCER_CTRL_DIR && \
  cd test && make build-test-binaries && \
  go clean -modcache && go clean --cache

The testing was done based on this commit
jaydeokar@89e302d

export TEST_IMAGE_REGISTRY=577579559164.dkr.ecr.eu-isoe-west-1.cloud.adc-e.uk
export PROD_IMAGE_REGISTRY=249663109785.dkr.ecr.eu-isoe-west-1.cloud.adc-e.uk

Verified the integration test was successful

/app/repository/aws-load-balancer-controller/scripts/run-e2e-test.sh

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the docs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes

BONUS POINTS checklist: complete for good vibes and maybe prizes?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟

[oliviassss]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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