Only shows section in vagrantfile when applicable

templates/Vagrantfile.template

@@ -10,11 +10,10 @@ Vagrant.configure("2") do |config|
   config.ssh.insert_key = false
   config.ssh.private_key_path = ["./.ssh/id_rsa","~/.vagrant.d/insecure_private_key"]
 
-  num_webserver = {{ num_webserver }}
-  num_loadbalancer = {{ num_loadbalancers }}
   num_postgresql = {{ num_postgres }}
 
-  (1..num_webserver).each do |nth|
+  {% if webserver_specs is not none %}
+  (1..{{ num_webserver }}).each do |nth|
     machine_id = "{{ customer_name }}-{{ env }}-web%d" % [nth]   
     machine_ip = increment_ip()
 
@@ -33,8 +32,10 @@ Vagrant.configure("2") do |config|
       end
     end
   end
+  {% endif %}
 
-  (1..num_loadbalancer).each do |nth|
+  {% if loadbalancers_specs is not none %}
+  (1..{{ num_loadbalancers }}).each do |nth|
     machine_id = "{{ customer_name }}-{{ env }}-lb%d" % [nth]  
     machine_ip = increment_ip()
 
@@ -53,8 +54,10 @@ Vagrant.configure("2") do |config|
       end
     end
   end
+  {% endif %}
 
-    (1..num_postgresql).each do |nth|
+  {% if postgres_specs is not none %}
+  (1..{{ num_postgres }}).each do |nth|
     machine_id = "{{ customer_name }}-{{ env }}-db%d" % [nth]  
     machine_ip = increment_ip()
 
@@ -73,4 +76,5 @@ Vagrant.configure("2") do |config|
       end
     end
   end
+  {% endif %}
 end