Create automated testing based on feature from this pr: https://github.com/openshift/console/pull/7399

As spadgett@redhat.com mentions in the comments the tests should include:

1. Create a secret with a binary file in the UI. Decode the secret using the CLI. Ensure that the file is identical to before.
2. Create a text secret with Unicode content. Make sure the encoding is correct when viewed in the UI and decoded in the CLI.