Allow to select default Environment Network

[OpenStack Infra]

https://review.openstack.org/202733

Dear documentation bug triager. This bug was created here because we did not know how to map the project name "openstack/murano-dashboard" to a launchpad project name. This indicates that the notify_impact config needs tweaks. You can ask the OpenStack infra team (#openstack-infra on freenode) for help if you need to.

commit 770135f11eb5a8b666661a8be0c123afb7911355
Author: Alexander Tivelkov <email address hidden>
Date: Thu Jul 16 21:19:27 2015 +0300

    Allow to select default Environment Network

    Provides users with an ability to select an existing Neutron network to
    be the default default network of the given environment. Thus all the
    VM instances running applications of this environment will join that
    network unless individually configured to join some other net.
    This allows to override the default behavior, i.e. the creation of
    dedicated network+subnet combination for each environment.

    This is imlemented by modifying the CreateEvironmentForm dialog: it's
    got a new dropdown field which allows to pick the network to join. This
    dropdown shares the same logic with NetworkChoiceField from Dynamic UI.
    By default, this dropdown has a "Create New" value selected, thus
    falling back to old behavior.

    Implements blueprint: ui-network-selection
    DocImpact

    Change-Id: I20e5d0ee498a1d67dd836fb27d6b1200cd0dd11f

[Ekaterina Chernova (efedorova)]

fixed in https://review.openstack.org/204715