Add support for Calgary (ca-west-1) in AWS

Feature Overview (aka. Goal Summary)  

Add support for Calgary (ca-west-1) in AWS

Goals (aka. expected user outcomes)

As a user I'm able to deploy OpenShift in Calgary (ca-west-1) in AWS and this region is fully supported

Requirements (aka. Acceptance Criteria):

A user can deploy OpenShift in AWS Calgary (ca-west-1) using all the supported installation tools for self-managed customers.

The support of this region is backported to the previuos OpenShift EUS release.

The corresponding RHCOS image needs to be available in the new region so the Installer can list the region.

Background

AWS has added support for a new region in their public cloud offering and this region needs to be supported for OpenShift deployments as other regions.

Documentation Considerations

The information of the new region needs to be added to the documentation so this is supported.