1. Adding some new helper files that split off file inclusion, templating, importing, constant usage.

1. Move all datasources to a new sources directory
1. Rename some files to be more consistent with python file/module naming.

cloudinit/templater.py

@@ -0,0 +1,17 @@
+import os
+
+from Cheetah.Template import Template
+
+from cloudinit import util
+
+TEMPLATE_DIR = '/etc/cloud/templates/'
+
+
+def render_to_file(template, outfile, searchList):
+    contents = Template(file=os.path.join(TEMPLATE_DIR, template),
+                 searchList=[searchList]).respond()
+    util.write_file(outfile, contents)
+
+
+def render_string(template, searchList):
+    return Template(template, searchList=[searchList]).respond()