allow for network checks to be skips in setup while testing using SKIP_NETWORK_CHECKS=1

Vagrantfile

@@ -22,6 +22,7 @@ Vagrant.configure("2") do |config|
     export PUBLIC_IPV6=auto
     export PRIMARY_HOSTNAME=auto-easy
     export CSR_COUNTRY=US
+    #export SKIP_NETWORK_CHECKS=1
 
     # Start the setup script.
     cd /vagrant

setup/start.sh

@@ -178,7 +178,9 @@ if [ "$PRIMARY_HOSTNAME" = "auto-easy" ]; then
 fi
 
 # Run some network checks to make sure setup on this machine makes sense.
-. setup/network-checks.sh
+if [ -z "$SKIP_NETWORK_CHECKS" ]; then
+	. setup/network-checks.sh
+fi
 
 # Create the user named "user-data" and store all persistent user
 # data (mailboxes, etc.) in that user's home directory.