tripleo-heat-templates/releasenotes/notes/update_serial-785ff794ff88f...

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YAML

---
upgrade:
- |
The new role variable update_serial is introduced
allowing parallel update execution. On Controller
role this variable defaults to 1 as pacemaker
has to be taken down and up in rolling fashion.
The default value is 25 as that is default value
for parallel ansible execution used by tripleo.