Added --snapshot-name option, removed mirror_name option (push)

--snapshot-name option or basename of destination path used instead
of mirror_name option. --snapshot-name is not requred option.
Breaks the backward compatibility for CLI interface.
(Related fix https://review.fuel-infra.org/22752).

Change-Id: I8891932ce0197f73e601b442d9a47193be9fd5e7
1 file changed