Introduce attributeValue tag and remove templateValues for import XML

[ahonor]

Update the yana XML import document to simplify defining nodes.

Changes:

• Remove the templateValue element.

• Introduce the attributeValue element to define values for a Node instances. Here is an example:

  <node id="myapp" nodetype="Service">
     <attributeValue templateAttribute="service.basedir">/usr/local/myapp</attributeValue>  
     <attributeValue templateAttribute="service.startuprank">1</attributeValue>                          
  </node>

XML Node Attributes

• templateAttribute: References the id of a templateAttribute

XML Node text data

• value to assign the attribute.

[ahonor]

The value should not be stored in an attribute but in the text of the Element.

Eg:

  <attributeValue templateAttribute="server.arch">i386</attributeValue>