Allow endpointURL to be specified in namespace annotations

[ryansteakley]

related issue: aws-controllers-k8s/community#876

We want the user to have the same level of control over endpoint_url as the existing account and region parameters. The current implementation it does not allow the user to specify endpoint_url in namespace meta data annotations when they are attempting to use cross-account or cross region resource management.

[ack-bot]

Hi @ryansteakley. Thanks for your PR.

I'm waiting for a aws-controllers-k8s 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. Regular contributors should join the org to skip this step.

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[RedbackThomson]

/ok-to-test

[a-hilaly]

Great stuff @ryansteakley ! 👍

[jaypipes]

I dig it. Nice work @ryansteakley :)

[vijtrip2]

/lgtm

[ack-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: A-Hilaly, jaypipes, ryansteakley, vijtrip2

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