Fix VENV temporary path
Fix VENV temporary path

Remove wrong setup of temporary path. mktemp creates the directory in
/tmp, so no need to add current directory to it.

Change-Id: Ie8e9ed90d1bb038a877ff9caf6d2d339f04766f0

dongwenjuan/project-config,Tesora/tesora-project-config,openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,openstack-infra/project-config