Fix fixed_network_name in tempest.conf
Fix fixed_network_name in tempest.conf

It also copies rally.conf and tempest.log in res_dir.

Change-Id: Ib907a29ba3f47ca861d3af8afc0ee74446222e89
Signed-off-by: Cédric Ollivier <d48310251a4a484d041bc5d09a9ac4d86d20f793@orange.com>

opnfv/functest,opnfv/functest