Monty Taylor 09f401755f Add 'serial' keyword to restart playbook
'forks' control how many parallel tasks ansible runs, but it does each
task in a play in parallel across those forks.

'serial' says to run all the tasks in a play on a host before moving to
the next one.

Change-Id: I780f55d26bae77a39065e9d9c08e989f9b3e4ef7
2015-10-17 13:34:23 -04:00
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