show deliverables in the order listed in the projects file

Use an ordered dictionary loader to maintain the order items appear in
the projects file so we can produce them in the same order in the
output.

Change-Id: I96707f96056cc94a34cf9f4b9edfb73f42f7bb27
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

doc/source/_exts/projects.py

@@ -17,7 +17,7 @@ import copy
 import os.path
 
 import yaml
-
+import yamlordereddictloader
 
 _projects_yaml = {}
 
@@ -38,4 +38,7 @@ def setup(app):
     filename = os.path.abspath('reference/projects.yaml')
     app.info('reading %s' % filename)
     with open(filename, 'r', encoding='utf-8') as f:
-        _projects_yaml = yaml.safe_load(f.read())
+        _projects_yaml = yaml.load(
+            f.read(),
+            Loader=yamlordereddictloader.Loader,
+        )

requirements.txt

@@ -4,3 +4,4 @@
 pydot2>=1.0.32
 PyYAML>=3.1.0
 six>=1.9.0
+yamlordereddictloader