Staging's identity vault's indices were named incorrectly

Jira: IAM-1731

Author: bheesham

terraform/infra/test/dynamo.tf

@@ -29,27 +29,27 @@ resource "aws_dynamodb_table" "dynamo" {
   }
   global_secondary_index {
     hash_key           = "primary_email"
-    name               = "production-identity-vault-primary_email"
+    name               = "${var.environment}-identity-vault-primary_email"
     non_key_attributes = []
     projection_type    = "ALL"
     range_key          = "id"
   }
   global_secondary_index {
     hash_key           = "primary_username"
-    name               = "production-identity-vault-primary_username"
+    name               = "${var.environment}-identity-vault-primary_username"
     non_key_attributes = []
     projection_type    = "ALL"
     range_key          = "id"
   }
   global_secondary_index {
     hash_key           = "sequence_number"
-    name               = "production-identity-vault-sequence_number"
+    name               = "${var.environment}-identity-vault-sequence_number"
     non_key_attributes = []
     projection_type    = "ALL"
   }
   global_secondary_index {
     hash_key           = "user_uuid"
-    name               = "production-identity-vault-user_uuid"
+    name               = "${var.environment}-identity-vault-user_uuid"
     non_key_attributes = []
     projection_type    = "ALL"
     range_key          = "id"