killuazhu

## What is the problem that this PR is trying to fix? Duplicated lines ## What approach did you choose and why? Remove duplicated line ## How can you test...

Add support for ssh key wrapper

1

Based on doc in https://docs.openstack.org/infra/jenkins-job-builder/wrappers.html?highlight=binding#wrappers.credentials-binding, this PR adds the support for `SSHUserPrivateKeyBinding` credential binding.

add a test case for backtick

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## Summary by CodeRabbit - **Tests** - Added a test to verify correct quoting of strings containing backticks.

Add one debug option to output raw secret

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Added one debug option flag `--debug-output-raw` to output the raw secret in the output. This feature is disabled by default, and it's intended to help troubleshooting.