OSDOCS-10717 adding ca-west-1 region to AWS docs

Author: bscott-rh

modules/installation-aws-regions.adoc

@@ -29,6 +29,7 @@ The following AWS public regions are supported:
 * `ap-southeast-3` (Jakarta)
 * `ap-southeast-4` (Melbourne)
 * `ca-central-1` (Central)
+* `ca-west-1` (Calgary)
 * `eu-central-1` (Frankfurt)
 * `eu-central-2` (Zurich)
 * `eu-north-1` (Stockholm)