Allow conditional imports, see examples/playbook3.yml comments for a full explanation. Extensive

refactoring of playbooks now warranted, which we'll do before we move on.   This variable assignment
system makes nearly all possible magic possible, for we can use these variables however we like,
even as module names!

lib/ansible/utils.py

@@ -22,6 +22,7 @@ import os
 import shlex
 import re
 import jinja2
+import yaml
 
 try:
     import json
@@ -267,6 +268,12 @@ def template_from_file(path, vars):
     ''' run a file through the templating engine '''
     data = file(path).read()
     return template(data, vars)
+
+def parse_yaml(data):
+    return yaml.load(data)
   
+def parse_yaml_from_file(path):
+    data = file(path).read()
+    return parse_yaml(data)