Add arm64 e2e test

[ConnorJC3]

Is this a bug fix or adding new feature?

New feature (for CI)

What is this PR about? / Why do we need it?

Adds Makefile target and associated changes to hack/ to run e2e tests on ARM instances

What testing is done?

Tested locally:

$ KOPS_STATE_FILE=s3://368597081700-kops-state make test-e2e-external-arm64
AWS_REGION=us-west-2 \
AWS_AVAILABILITY_ZONES=us-west-2a,us-west-2b,us-west-2c \
HELM_EXTRA_FLAGS='--set=controller.k8sTagClusterId=$CLUSTER_NAME' \
EBS_INSTALL_SNAPSHOT="true" \
TEST_PATH=./tests/e2e-kubernetes/... \
GINKGO_FOCUS="External.Storage" \
GINKGO_SKIP="\[Disruptive\]|\[Serial\]" \
INSTANCE_TYPE="m7g.medium" \
AMI_PARAMETER="/aws/service/ami-amazon-linux-latest/al2023-ami-kernel-default-arm64" \
IMAGE_ARCH="arm64" \
./hack/e2e/run.sh

...

Running Suite: Kubernetes e2e suite - /home/conncatl/aws-ebs-csi-driver/tests/e2e-kubernetes/_rundir/e2e-kubernetes
===================================================================================================================
Random Seed: 1698939377 - will randomize all specs

Will run 251 of 7672 specs
Running in parallel across 25 processes

...

Deleted cluster: "test-cluster-25926.k8s.local"
###
## OVERALL_TEST_PASSED: 0
#
###
## SUCCESS!
#

[torredil]

/lgtm

[torredil]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: torredil

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