Provide more information in ipa-certupdate on ccache failure
    
    ipa-certupdate obtains host credentials to operate. If this
    fails with a ccache error this can be confusing if the user
    executing it already has admin credentails.
    
    Include the principal being retrieved and the keytab being
    used.
    
    This basically intercepts the exception to log additional
    information and lets the exception be handled at a higher
    level.
    
    https://pagure.io/freeipa/issue/8257
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>