ipatests: Test for OTP when the LDAP connection timed out.
    
    Test to verify that when the idle timeout is exceeded (30s idle,
    60s sleep) then the ipa-otpd process should exit without error.
    
    Related : https://pagure.io/freeipa/issue/6587
    
    Signed-off-by: Anuja More <amore@redhat.com>
    Reviewed-By: Mohammad Rizwan <myusuf@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>