using *zip*/archive.zip as default for :jenkins_artifact_file

deploy fails with `SSHKit::Runner::ExecuteError: Exception while executing on host <deploy host>: can't convert nil into String` when `:jenkins_artifact_file` not specified

using `*zip*/archive.zip` as default value

if `:jenkins_artifact_file` option not specified - unzipping artifact content and moving to release path.
Agree.
The reason I've changed this is that I personally use content of the REVISION file as the key part for some caches, so  new deploy can invalidate them. actually original value `"build #{last_build_number}"` will also work.

What about making it "build-#{last_build_number}" ? or using application name, like "#{fetch(:application)}-#{last_build_number}" ?