Henry Gessau 07c8e144d7 Update devref examples about alembic migrations
Because model_base.py is now in neutron-lib.

Change-Id: I4e508a9c88af1017ffa20f5346e3c859c5236223
2016-11-16 22:17:37 -05:00
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2016-04-13 09:40:20 +02:00
2015-12-04 18:43:28 -08:00