Adding TOSCA bootstrapping instructions

Change-Id: Ie0a7c6dffe1b2d9d3b629edc7bde6831aa8aafcb
diff --git a/scenarios/mock/config.yml b/scenarios/mock/config.yml
index a28fcf0..e433938 100644
--- a/scenarios/mock/config.yml
+++ b/scenarios/mock/config.yml
@@ -25,7 +25,7 @@
 build_cord_dir: /opt/cord
 
 # Vagrant VM configuration
-head_vm_mem: 2048
+head_vm_mem: 6048
 head_vm_cpu: 4
 head_vm_ip: "192.168.46.100"