test_renewal_master: add ipa csreplica-manage test
    
    Add test case for setting renewal master using command
    ipa-csreplica-manage.
    
    Automation related to upstream ticket #7120. Testing using
    config-mod already covered.
    
    https://pagure.io/freeipa/issue/7321
    
    Reviewed-By: Christian Heimes <cheimes@redhat.com>