Patch ssh private key secret

[amartyasinha]

Current issues:

• ssh-privatekey under data was not under the scope of masking.
• last-applied-configuration which is under metadata was also not under the scope of masking.

This PR aims to fix both issues. A new _applyMask method is added to do recursive call over secrets which are part of metadata.

Testing:
Currently, the python script was directly tested against a k8s secret dump and it was able to mask ssh-privatekey within data and metadata. It has not been tested as a part of a job.

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/ac38549d869a44b49622d032d4bcd591

❌ podified-multinode-edpm-deployment-crc RETRY_LIMIT in 3m 06s

[frenzyfriday]

/lgtm

[pablintino]

/lgtm

The content in the must-gather output seems to be fine. I'm fine with the change.

[frenzyfriday]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: frenzyfriday

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[frenzyfriday]

/approved

[pablintino]

/cherry-pick 18.0-fr1

[openshift-cherrypick-robot]

@pablintino: new pull request created: #85

In response to this:

/cherry-pick 18.0-fr1

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