Standardize region handling for Trusted Advisor

Author: mwunderl

tuts/140-aws-trustedadvisor-gs/aws-trustedadvisor-gs.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/ta.log") 2>&1
-export AWS_DEFAULT_REGION=us-east-1; echo "Region: us-east-1 (Trusted Advisor is global)"
+REGION=us-east-1  # Trusted Advisor requires us-east-1
+export AWS_DEFAULT_REGION="$REGION"; export AWS_REGION="$REGION"; echo "Region: $REGION (Trusted Advisor is global)"
 echo "Step 1: Listing checks"
 aws support describe-trusted-advisor-checks --language en --query 'checks[:10].{Id:id,Name:name,Category:category}' --output table 2>/dev/null || echo "  Trusted Advisor requires Business or Enterprise Support plan"
 echo "Step 2: Getting check results"