Resize/renumber the default VPC CidrBlocks

Fixes #137

Also avoid 172.17.0.0/16 block used by AWS Cloud9 and SageMaker
per https://docs.aws.amazon.com/vpc/latest/userguide/vpc-cidr-blocks.html

Signed-off-by: Elliot Murphy <statik@users.noreply.github.com>

Author: statik

default-resources.yml

@@ -3,7 +3,7 @@ resources:
     VPC:
       Type: AWS::EC2::VPC
       Properties:
-        CidrBlock: 172.98.0.0/18
+        CidrBlock: 172.22.0.0/20
         EnableDnsSupport: true
         EnableDnsHostnames: true
         Tags:
@@ -15,7 +15,7 @@ resources:
       Properties:
         VpcId: !Ref VPC
         AvailabilityZone: ${aws:region, 'us-east-1'}a
-        CidrBlock: 172.98.0.0/18
+        CidrBlock: 172.22.0.0/20
         MapPublicIpOnLaunch: true
         Tags:
         - Key: Name