tree 9883b7840d6b477160c6f8150ceb524d0a0b8945
parent b2bdfc92806a6c32dc561ee850a6d5e8fd6d05f0
author Antonio Barone <syntonyze@gmail.com> 1606934204 +0100
committer Antonio Barone <syntonyze@gmail.com> 1606935989 +0000

Retain Network stack in dual-master

Blue/green deployment of the dual-master recipe requires that the blue
and the green stacks are deployed within the same VPC.

In order to preserve the VPC, the IGW and the subnet upon deletion of
the blue stack, the nested network cloudformation template needs to be
protected from deletion.

Change-Id: I75982a2b02f86dc57ff95ae71e6c326ff88e2717