Unbreak stable neutron functional jobs
Unbreak stable neutron functional jobs

The 9c87abeeeefa8d298487c0cc597ffc4e7ee2dcef is supported
a neutron code reorganization on the master branch,
but did not considered the stable branches.

The neutron functional job will fall back to the previous location,
when the new script is not available.

Change-Id: I2d4595abf68c6961eb331dd88ef75ce0d0002aa0

noorul/os-project-config,open-switch/infra_project-config,coolsvap/project-config,citrix-openstack/project-config,Tesora/tesora-project-config,citrix-openstack/project-config,Tesora/tesora-project-config,noorul/os-project-config,coolsvap/project-config,anbangr/osci-project-config,dongwenjuan/project-config,dongwenjuan/project-config,openstack-infra/project-config,anbangr/osci-project-config,open-switch/infra_project-config,openstack-infra/project-config