TEST: Add common function are_values_in_array()
    
    This patch adds function are_values_in_array() to common test code. And
    there is tc_are_values_in_array macro defined which is usefull for
    talloc allocated values and arrays.
    
    Resolves:
    https://fedorahosted.org/sssd/ticket/2730
    
    Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
    (cherry picked from commit 6ae53d7b54ec2ece9fb51ed92c097f5ba8f9d849)