chore: Adds database_subnet_group_name as an output variable (#592)

Author: DeLoWaN

README.md

@@ -715,6 +715,7 @@ No Modules.
 | database\_route\_table\_ids | List of IDs of database route tables |
 | database\_subnet\_arns | List of ARNs of database subnets |
 | database\_subnet\_group | ID of database subnet group |
+| database\_subnet\_group\_name | Name of database subnet group |
 | database\_subnets | List of IDs of database subnets |
 | database\_subnets\_cidr\_blocks | List of cidr\_blocks of database subnets |
 | database\_subnets\_ipv6\_cidr\_blocks | List of IPv6 cidr\_blocks of database subnets in an IPv6 enabled VPC |

outputs.tf

@@ -133,6 +133,11 @@ output "database_subnet_group" {
   value       = concat(aws_db_subnet_group.database.*.id, [""])[0]
 }
 
+output "database_subnet_group_name" {
+  description = "Name of database subnet group"
+  value       = concat(aws_db_subnet_group.database.*.name, [""])[0]
+}
+
 output "redshift_subnets" {
   description = "List of IDs of redshift subnets"
   value       = aws_subnet.redshift.*.id