changing VPC to use outputs

.cloudformation/02-stack-vpc.yaml

@@ -75,19 +75,19 @@ Outputs:
     Description: The VPC ID.
     Value: !Ref PublicVPC
     Export:
-      Name: ELBStrapiPublicVPC
+      Name: !Sub "${AWS::StackName}-ELBStrapiPublicVPC"
   PublicSubnet0ID:
     Description: The ID of the subnet.
     Value: !Ref PublicSubnet0
     Export:
-      Name: ELBStrapiSubnet0
+      Name: !Sub "${AWS::StackName}-ELBStrapiSubnet0"
   PublicSubnet1ID:
     Description: The ID of the subnet.
     Value: !Ref PublicSubnet1
     Export:
-      Name: ELBStrapiSubnet1
+      Name: !Sub "${AWS::StackName}-ELBStrapiSubnet1"
   PublicSubnet2ID:
     Description: The ID of the subnet.
     Value: !Ref PublicSubnet2
     Export:
-      Name: ELBStrapiSubnet2
+      Name: !Sub "${AWS::StackName}-ELBStrapiSubnet2"