Adds notes about Tuskar under components
Adds notes about Tuskar under components

Change-Id: If1f08af8f72dff9cc0ffa98fae9ef1ad26da49ee

eprasad/instack-undercloud,eprasad/instack-undercloud,dmsimard/instack-undercloud,dpkshetty/instack-undercloud,bcrochet/instack-undercloud,rdo-management/instack-undercloud,dmsimard/instack-undercloud,bcrochet/instack-undercloud,rdo-management/instack-undercloud,dpkshetty/instack-undercloud