Ricardo Carrillo Cruz adc37970ab Add ability to generate keypair on-the-fly
This change adds a flag 'generate_keypair' that makes the
role to generate an ssh keypair, create an OpenStack keypair with
it and all the servers of the play will have that key baked in.
The folder, key type and key length are also configurable.

Change-Id: Iccbec24e9834c1fa03da8add94e069f622024537
2016-06-22 13:14:03 +00:00
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