add --driver option to jenkins_generic_job

[rljacob]

Allow overriding the coupler driver (e.g. mct, nuopc) passed to create_test from the Jenkins job script.

Description

Allow passing --driver as an option to jenkins_generic_job

Checklist

• [X ] My code follows the style guidelines of this project (black formatting)
• [ X] I have performed a self-review of my own code
• [ X] My changes generate no new warnings
• I have added tests that exercise my feature/fix and existing tests continue to pass
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding additions and changes to the documentation

[rljacob]

@jgfouca can you include this in your CIME update E3SM-Project/E3SM#8412 ?