1\ Added functionality to remove dynamodb entries for the cluster after an unplanned failover

2\ New script to delete entries manually if needed for a cluster promotion.

Author: adisamant

delete_gdb_entry.py

@@ -0,0 +1,33 @@
+from logging import FATAL
+import argparse 
+import boto3
+from botocore.exceptions import ClientError
+
+def main():
+    # Main routine
+    
+    try:
+        #get the cluster name and the region name
+        parser=argparse.ArgumentParser()
+        parser.add_argument ("-c", "--regional-cluster-name", type=str, help="Name of the regional cluster entry to be deleted")
+        parser.add_argument ("-r","--region-name", type=str, default='', help="region name")
+
+        #process arguments
+        region = args.region_name
+        cluname= args.regional_cluster_name
+
+        #delete the entry from the region
+        ddbclient=boto3.client('dynamodb',region_name = region)
+        
+        dresponse = ddbclient.delete_item(
+                    TableName='gdbcnamepair',
+                    Key = {
+                    'clustername':{'S':cluname}
+                            })
+
+    except ClientError as e:
+        print(e)
+        raise
+
+if __name__ == "__main__":
+    main()