Change the return codes of ipa-acme-manage
    
    Traditionally in IPA 0 = success, 1 = error and then
    specific error messages follow from that. Shift the
    ipa-acme-manage return codes for "not installed" and
    "not a CA" up by one.
    
    https://pagure.io/freeipa/issue/8498
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>
    Reviewed-By: Mohammad Rizwan <myusuf@redhat.com>