Test helm chart installation in e2e test

[Danil-Grigorev]

What steps did you take and what happened:
[A clear and concise description on how to REPRODUCE the bug.]

Currently we only test helm chart templating within our e2e tests. This is not enough to fetch issues with the image before release.

What did you expect to happen:

Instead, we should perform full helm chart installation in each e2e run.

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Cluster-api-operator version:
• Cluster-api version:
• Minikube/KIND version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):

/kind bug
[One or more /area label. See https://github.com/kubernetes-sigs/cluster-api-operator/labels?q=area for the list of labels]

[k8s-ci-robot]

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