packer: dev nodes have wifi right now.

Later on, wpa_supplicant will be removed but it's needed now for
testing.

packer/scripts/install-base.sh

@@ -8,5 +8,5 @@ echo 'nameserver 8.8.8.8' > /etc/resolv.conf
 
 echo "==> installing base updates"
 apt-get -y update
-apt-get -y install ansible apt-transport-https ca-certificates
+apt-get -y install ansible apt-transport-https ca-certificates wpasupplicant
 apt-get -y clean