add asia-south2 to region to GCP

Author: mletalie

modules/sdpolicy-am-regions-availability-zones.adoc

@@ -41,6 +41,7 @@ The following Google Cloud regions are currently supported:
 * asia-northeast1, Tokyo, Japan
 * asia-northeast2, Osaka, Japan
 * asia-south1, Mumbai, India
+* asia-south2, Delhi, India
 * asia-southeast1, Jurong West, Singapore
 * australia-southeast1, Sydney, Australia
 * europe-north1, Hamina, Finland