[Trivial]Replace the combination symbol in file name
[Trivial]Replace the combination symbol in file name

The output file name is combined with '-' other than '_',
for example: "fake-0.1".

Change-Id: Ia585c8aa9656d271e57ee396b25e20607917eedf

openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests