[murano] Return None instead of empty string for optional fields in dynamic UI

[Ekaterina Chernova]

Some applicationtions have not-required dependencies that are don't
handled correctly due to this bug

If no value set, deployment will fail

[OSCI Robot (oscirobot)]

DEB package murano-dashboard has been built for project openstack/murano-dashboard
Package version == 0.5.0, package release == fuel5.1.2~mira29+git.64a7ffa.3919caf

Changeset: https://review.fuel-infra.org/2094
project: openstack/murano-dashboard
branch: openstack-ci/fuel-5.1.2/2014.1.1
author: Ekaterina Chernova
committer: Ekaterina Chernova
subject: Return None instead of empty string for optional fields
status: patchset-created

Files placed on repository:
murano-dashboard_0.5.0-fuel5.1.2~mira29+git.64a7ffa.3919caf_all.deb

NOTE: Changeset is not merged, created temporary package repository.
DEB repository URL: http://osci-obs.vm.mirantis.net:82/ubuntu-fuel-5.1.2-stable-2094/ubuntu

[OSCI Robot (oscirobot)]

RPM package murano-dashboard has been built for project openstack/murano-dashboard
Package version == 0.5.0, package release == fuel5.1.2.mira8.git.64a7ffa.3919caf

Changeset: https://review.fuel-infra.org/2094
project: openstack/murano-dashboard
branch: openstack-ci/fuel-5.1.2/2014.1.1
author: Ekaterina Chernova
committer: Ekaterina Chernova
subject: Return None instead of empty string for optional fields
status: patchset-created

Files placed on repository:
murano-dashboard-0.5.0-fuel5.1.2.mira8.git.64a7ffa.3919caf.noarch.rpm

NOTE: Changeset is not merged, created temporary package repository.
RPM repository URL: http://osci-obs.vm.mirantis.net:82/centos-fuel-5.1.2-stable-2094/centos