Add details on how to contribute

Add collectd-ceilometer specific contrib information
- What needs to be included in a feature?
- How to add a reno entry

Change-Id: I91cf5af30eb0e26695dffd374f796023dd8af099

CONTRIBUTING.rst

@@ -1,3 +1,6 @@
+Contributing to Openstack
+=========================
+
 If you would like to contribute to the development of OpenStack, you must
 follow the steps in this page:
 
@@ -15,3 +18,64 @@ Pull requests submitted through GitHub will be ignored.
 Bugs should be filed on Launchpad, not GitHub:
 
    https://bugs.launchpad.net/collectd-ceilometer-plugin
+
+Contributing to collectd-ceilometer-plugin
+==========================================
+
+As well as following the OpenStack contribution guidelines, there are a few
+guidelines that should be observed for this project.
+
+Blueprints
+----------
+Blueprints are generally not required for features. A bug should be opened in
+launchpad instead and tagged as "rfe".
+
+
+Feature development
+-------------------
+Each feature should consist of a number of components (below), which can be submitted
+in separate, dependant patches.
+
+Each patch should function independently, and should work even if the
+following patches are not applied.
+
+The patches should include the following:
+
+- Feature enabling code
+  - For larger features, there might be several smaller patches.
+
+- Unit tests
+  - Tests should be included with the relevant feature code.
+
+- Documentation
+  - How does the feature work?
+  - How do you configure this feature when installing a) manually and b) using
+    devstack?
+  - What configuration options were introduced/changed?
+  - Examples for particular scenarios should be included in the
+    doc/source/examples/ directory.
+  - Updates to individual config options should be included in doc/source/usage.rst.
+
+- Deployment code
+  - At a minimum, deployment code for devstack, including
+    any relevant config options, should be added.
+  - Deployment code includes any changes to the given configurations.
+
+- Release note
+  - A reno entry needs to be included for every change:
+    http://docs.openstack.org/developer/reno/usage.html#creating-new-release-notes
+
+
+Bug Fixes
+---------
+A bug fix will typically be a single patch, with any relevant changes to
+documantation, configuration, etc included.
+
+Release notes should be created using the bug number in the following way::
+  reno new bug-123456
+
+Release notes should reference the bug number and have a brief description
+of the bug e.g.::
+  critical|security|fixes:
+    - Fixed bug #123456: Authentication token now automatically renews after
+      expiry.

releasenotes/notes/updated-contrib-guide-f411272d52cff202.yaml

@@ -0,0 +1,3 @@
+---
+other:
+  - Added additional details on how to contribute.