Merge "unify functest_yaml obtain process"

diff --cc ci/prepare_env.py
Simple merge

diff --cc testcases/OpenStack/rally/run_rally-cert.py
Simple merge

diff --cc testcases/OpenStack/tempest/run_tempest.py
Simple merge

diff --cc testcases/OpenStack/vPing/vping_util.py
Simple merge

diff --cc testcases/features/copper.py
Simple merge

diff --cc testcases/features/doctor.py
Simple merge

diff --cc testcases/features/domino.py
Simple merge

diff --cc testcases/features/promise.py
Simple merge

diff --cc testcases/vnf/vIMS/vIMS.py
Simple merge

diff --cc testcases/vnf/vRNC/parser.py
Simple merge

diff --cc utils/functest_utils.py
Simple merge