test(e2e): Allow alternative helm charts in E2E test suite

[JoeNorth]

What type of PR is this?

/kind feature

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

The current E2E test suite is hardcoded to use the chart local to the repository. As part of testing an alternatively packaged, remote Helm chart the suite has been updated to allow specifying an arbitrary chart location and registry credentials. The default behavior remains unchanged.

How was this change tested?

The change was tested by running the E2E test suite on kops both with and without the new chart and registry credential variables.

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @JoeNorth. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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.

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[k8s-ci-robot]

This PR has multiple commits, and the default merge method is: merge.
You can request commits to be squashed using the label: tide/merge-method-squash

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[ConnorJC3]

/ok-to-test
/lgtm

[kubernetes-prow]

@JoeNorth: 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
pull-aws-ebs-csi-driver-e2e-parameters	1e2f7a5	link	true	/test pull-aws-ebs-csi-driver-e2e-parameters

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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-sigs/prow repository. I understand the commands that are listed here.