Allow including files through variables

$FILE{file} will be replaced with the contents of "file"
$PIPE{cat file} will be replaced with the output of "cat file"

test/TestUtils.py

@@ -16,7 +16,7 @@ class TestUtils(unittest.TestCase):
             }
         }
 
-        res = ansible.utils._varLookup('data.who', vars)
+        res = ansible.utils.varLookup('${data.who}', vars)
 
         assert sorted(res) == sorted(vars['data']['who'])
 
@@ -209,10 +209,24 @@ class TestUtils(unittest.TestCase):
             'person': 'one',
         }
 
-        res = ansible.utils.template(template, vars)
+        res = ansible.utils.template(None, template, vars)
 
         assert res == u'hello oh great one'
 
+    def test_varReplace_include(self):
+        template = 'hello $FILE{world}'
+
+        res = ansible.utils.template("test", template, {})
+
+        assert res == u'hello world\n'
+
+    def test_varReplace_include_script(self):
+        template = 'hello $PIPE{echo world}'
+
+        res = ansible.utils.template("test", template, {})
+
+        assert res == u'hello world\n'
+
     #####################################
     ### Template function tests