Julia Kreger 199e490cbc Add vendor step placement suggestion
As discussed on irc[1], we felt the need to document the stance
on placement of vendor specific steps, in terms of what we as a
project would prefer to do and prefer to avoid.

[1]: http://eavesdrop.openstack.org/irclogs/%23openstack-ironic/%23openstack-ironic.2018-08-30.log.html#t2018-08-30T16:00:57

Change-Id: I795ac06a0c249697ed2f6d066dc46069c7e0f8ae
2018-08-31 10:12:50 +00:00
..