Detect use of a region based naming scheme

Regarding https://onecloudplease.com/blog/s3-bucket-namesquatting, check for S3 buckets with names containing the regions (ex. mycompany-us-east-1, mycompany-us-east-2, etc.). If this pattern exists for all regions, then assume it is a set pattern for them, and alert because this could potentially break things for them if a new region comes out and someone squats on that region.