aws-r53 adding Africa (Cape Town) ELB endpoints and hosted zone id's

[mzingarelli]

Description
This addresses external-dns running in af-south-1 whereby only CNAME entries are created when A records are intended

Adding Africa (Cape Town) ELB endpoint and hosted zone id's

Fixes #1830

Checklist

• Unit tests updated
• End user documentation updated

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[mzingarelli]

CLA signed

[mzingarelli]

/assign @njuettner

[njuettner]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mzingarelli, njuettner

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[shankarsundaram]

@njuettner may i know, under what version this fixes are available?