Add release note for composable upgrades

Adds an initial release note for composable upgrades - I had to be
vague in the upgrades section as we're still working out some details
of the final upgrade workflow for all roles.

Change-Id: Iac0af86f3b56a07070a9d24b1255953f5fd07b34

diff --git a/releasenotes/notes/composable-upgrades-d9ec7c634365e8e0.yaml b/releasenotes/notes/composable-upgrades-d9ec7c634365e8e0.yaml
new file mode 100644 (file)
index 0000000..55062b0
--- /dev/null
+++ b/releasenotes/notes/composable-upgrades-d9ec7c634365e8e0.yaml
@@ -0,0 +1,14 @@
+---
+features:
+  - |
+    Composable service plugins now support two additional sections,
+    upgrade_tasks and upgrade_batch_tasks.  These can be used by service
+    template authors to define the required behavior on upgrade as ansible
+    tasks, for both upgrades that require downtime, and rolling upgrades.
+    See puppet/services/README.rst for more details.
+upgrade:
+  - |
+    Please refer to tripleo-docs for full details on the upgrade workflow
+    required for Newton to Ocata upgrades, as it's possible some steps are
+    different to previous releases:
+    http://docs.openstack.org/developer/tripleo-docs/post_deployment/upgrade.html