set redshift and neptune clusters removal policy to destroy (#1675)

Author: cnfait

test_infra/stacks/databases_stack.py

@@ -232,6 +232,7 @@ def _setup_redshift(self) -> None:
         redshift_cluster = redshift.Cluster(
             self,
             "aws-sdk-pandas-redshift-cluster",
+            removal_policy=RemovalPolicy.DESTROY,
             default_database_name=database,
             master_user=redshift.Login(
                 master_username=self.db_username,
@@ -676,6 +677,7 @@ def _setup_neptune(self, iam_enabled: bool = False, port: int = 8182) -> None:
         cluster = neptune.DatabaseCluster(
             self,
             "aws-sdk-pandas-neptune-cluster",
+            removal_policy=RemovalPolicy.DESTROY,
             vpc=self.vpc,
             instance_type=neptune.InstanceType.R5_LARGE,
             iam_authentication=iam_enabled,