Add jfrog config flags to docker scan

[attiasas]

• The pull request is targeting the dev branch.
• The code has been validated to compile successfully by running go vet ./....
• The code has been formatted properly using go fmt ./....
• All static analysis checks passed.
• All tests have passed. If this feature is not already covered by the tests, new tests have been added.
• Updated the Contributing page / ReadMe page / CI Workflow files if needed.
• All changes are detailed at the description. if not already covered at JFrog Documentation, new documentation have been added.

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To allow jf docker scan to run by passing the values directly to the commands (without using the config command before)
The following flags are added to the jf docker scan command:

• --url: JFrog URL
• --xray-url: JFrog Xray URL
• --user: JFrog username
• --password: JFrog password
• --access-token: JFrog access token

[github-actions]

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🐸 JFrog Frogbot

[kerenr-jfrog]

LGTM