OSDOCS-2900: Update AWS AMIs

[mjpytlak]

CP to 4.10

This PR address OSDOCS-2900.

RedHat now provides RHCOS AWS AMIs for the us-gov-east-1 and us-gov-west-1 regions. Updated x86_64 RHCOS AMIs table with these regions.

Preview
RHCOS AMIs for the AWS infrastructure

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[mjpytlak]

@yunjiang29 and @miabbott Requesting your review of this doc update.

"RHCOS AMIs for the AWS infrastructure" now has a table for x86_64 and arm64. I updated the x86 table, but was not sure if these updates applied for arm64. Should I add to the us-gov-east-1 and us-gov-west-1 regions for arm64, as well?

[miabbott]

We didn't push arm64 AMIs into those regions, so I would leave that be for now.

Just going to tag @andymcc to see if he has any input re: AWS GovCloud support for aarch64 + how it pertains to OCP

[andymcc]

We don't currently have plans for GovCloud support for aarch64, and we don't push the AMIs there as a result, so we should be fine to leave that for now.

[yunjiang29]

LGTM.

[skrthomas]

LGTM

[kalexand-rh]

/cherrypick enterprise-4.10

[openshift-cherrypick-robot]

@kalexand-rh: new pull request created: #42555

Details

In response to this:

/cherrypick enterprise-4.10

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