Congress client repository clone fix
Congress client repository clone fix

Client git repositories are cloned as part of devstack-gate prepare script.

Change-Id: Iea1c16b3f4772ca6698e69d9e24d0fbd4cf9407b
Closes-Bug: #1429161

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