moved override matching string to variable changed test template to match…

moved override matching string to variable changed test template to match Signed-off-by: Brian Coca <briancoca+ansible@gmail.com>

Signed-off-by: Brian Coca <briancoca+dev@gmail.com>

lib/ansible/utils/template.py

@@ -31,7 +31,7 @@ import pwd
 # TODO: refactor this file
 
 _LISTRE = re.compile(r"(\w+)\[(\d+)\]")
-
+JINJA2_OVERRIDE='#jinja2:'
 
 def _varFindLimitSpace(basedir, vars, space, part, depth):
     ''' limits the search space of space to part
@@ -277,7 +277,7 @@ def template_from_file(basedir, path, vars):
         raise errors.AnsibleError("unable to read %s" % realpath)
 
     # Get jinja env overrides from template
-    if data.startswith('#env:'):
+    if data.startswith(JINJA2_OVERRIDE):
         eol = data.find('\n')
         line = data[5:eol]
         data = data[eol+1:]

test/jinja2_overrides.tpl

-#env: variable_end_string: @@, variable_start_string: @@
+#jinja2: variable_end_string: @@, variable_start_string: @@
 
 {% raw %}
  if this succeeds you should see '{{ ansible_hostname }}' with the hostname on the line above