Docstring for validators._soft_validate_additional_properties is incomplete

[Ed Leafe]

The recent change to validators.py to allow for varying scheduler hints added the parameter 'additional_properties_value', which strongly affects the behavior of the method, but this behavior was not explained in the method's docstring. It was felt that we should merge the change and fix this later, so this bug report is to ensure that we don't forget.

https://github.com/openstack/nova/blob/master/nova/api/validation/validators.py#L78-L98

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/222228

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/222228
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=eadcdccd74c091eebeef20a0a534c64a479e423d
Submitter: Jenkins
Branch: master

commit eadcdccd74c091eebeef20a0a534c64a479e423d
Author: EdLeafe <email address hidden>
Date: Thu Sep 10 14:46:48 2015 +0000

    Add missing information to docstring

    A recent change to the '_soft_validate_additional_properties()' method
    in nova/api/validation/validators.py added new behaviors without
    updating the docstring to reflect the new behaviors. Rather than block
    that patch from merging, it was felt that a follow-up patch to fix the
    docstring was preferable.

    Closes-bug: 1494289
    Change-Id: I3e32742a935b94eb211591bbf1e5695d5301101e