Modify Groups clears groups from project

[Marek Lyčka]

To reproduce

0) Create a project with a security group
1) Go to: Identity > Projects
2) Select the 'Modify Groups' action for the project from step 0
3) Add a different security group to the project and save the changes

After the save goes through:
=> the group will not have been addedto the project
=> all previously assigned groups will have been removed from the project

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/601237

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/601237
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=173144dfa7f1ca70e019c9f424ff85d8c9e210b6
Submitter: Zuul
Branch: master

commit 173144dfa7f1ca70e019c9f424ff85d8c9e210b6
Author: Marek <email address hidden>
Date: Mon Sep 10 11:52:52 2018 +0200

    Fixes a faulty if-check

    Constructs a list object from a filter object; previously, the
    if would always resolve as true because a FilterObject was being
    checked.

    Change-Id: Ie88b81019cc05d4a454ac1c2ddc0e05a86a1c2ae
    closes-bug: #1791602

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 15.0.0.0b1 development milestone.