Use map instead of bool for passing custom roles

[tjungblu]

This also adds the KMS component which we assign soon.

What this PR does / why we need it:

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• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

[openshift-ci]

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[openshift-ci]

@tjungblu: 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
ci/prow/e2e-aws	3282bb5	link	true	/test e2e-aws

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