Remove self-signed certificate question in Config

[yahavi]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• All static analysis checks passed.
• This pull request is on the dev branch.
• I used gofmt for formatting the code before submitting the pull request.

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Every time a user interactively logs in to the JFrog platform, they are asked the following question:

Is the Artifactory reverse proxy configured to accept a client certificate?

This pull request removes that question.

• For the jf c add command, users still can provide certificates using the --client-cert-key-path and --client-cert-path flags if necessary.
• For the jf login command, self-signed certificates will not be supported at this time. Users should use the jf c add command instead.