Added yaml prettifer and using on initial persona

conf/personas/devstack.sh.yaml

@@ -1,11 +1,7 @@
 ---
-description: Devstack.sh matching component installation.
-supports:
-- rhel-6
-- ubuntu-oneiric
-- fedora-16
-options:
 components:
+# Order matters here!
+- general
 - db
 - rabbit-mq
 - keystone-client
@@ -16,16 +12,24 @@ components:
 - quantum-client
 - nova-client
 - horizon
+description: Devstack.sh matching component installation.
+options: null
 subsystems:
-  glance:
-  - api
-  - reg
-  nova:
-  - api
-  - cauth
-  - cert
-  - cpu
-  - net
-  - sched
-  - vol
-  - xvnc
+    glance:
+    - api
+    - reg
+    nova:
+    - api
+    - cauth
+    - cert
+    - cpu
+    - net
+    - sched
+    - vol
+    - xvnc
+supports:
+- rhel-6
+- ubuntu-oneiric
+- fedora-16
+...
+

tools/yamlpretty.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+
+import yaml
+import os
+import sys
+
+# See: http://pyyaml.org/wiki/PyYAMLDocumentation
+
+if __name__ == "__main__":
+    args = list(sys.argv)
+    args = args[1:]
+    for fn in args:
+        data = None
+        with open(fn, 'r') as fh:
+            data = yaml.load(fh.read())
+            fh.close()
+        formatted = yaml.dump(data,
+                            line_break="\n",
+                            indent=4,
+                            explicit_start=True,
+                            explicit_end=True,
+                            default_flow_style=False,
+                            )
+        print formatted