Use .netrc file for Jfrog CLI

[jordantangy]

Is your feature request related to a problem? Please describe.

In our CI environment, we leverage JFrog CLI across multiple slaves, each configured to support distinct programs. Each program is associated with a specific user assigned to the relevant slave connection, enabling independent operation with a unified configuration. Additionally, we use a shared .netrc file for source fetching and other related tasks.

Describe the solution you'd like to see

Centralizing credentials in the .netrc file simplifies expanding JFrog CLI usage across our CI pipeline. This setup streamlines management and enhances flexibility, enabling us to integrate JFrog CLI into our CI flow more efficiently.

[nrclark]

+1 to above, that would be a big help to me as well.