add ca-west-1 to list of known regions

[rjjaegeraws]

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Add ca-west-1 to the list of known regions to pass config validation phases.

[hickeydh-aws]

LGTM

[jvescio-ssc]

The accelerator does not work when adding ca-west-1 to :

• "global-options\supported-regions"
• "replacements\addl_regions[a-c]"

Results:

• The run fail because macie doesn't exist in ca-west-1 (we needed to exclude it in macie-excl-regions)
• Needed to manually enable ca-west-1 in all accounts
• Needed to manually enable sts Service tokens in ca-west-1 and global in all accounts
• Keys and policies were not being pushed to the new regions in the accounts.

[rjjaegeraws]

There are other considerations in addition to the ones listed (e.g. AWS Config rules). We are working on publishing a guide with sample configuration snippets to demonstrate how to get ca-west-1 configured.