route/tests: relax check for nh timers

Kernel stores the timer values internally in HZ size, so it looses
precision when converting to HZ and back. And as the HZ value is
configurable, it depends on the kernel, how exactly the values
get mangled.

Relax the check for that.

Fixes: 996f617 ('[tests] Add full kernel-roundtrip test-suite for rtnl_nh')

#444
#445

Author: thom311

tests/cksuite-route-nh.c

@@ -378,11 +378,13 @@ START_TEST(test_kernel_roundtrip_group_resilient)
 	tmp32 = 0;
 	ck_assert_int_eq(rtnl_nh_get_res_group_idle_timer(grp_kernel, &tmp32),
 			 0);
-	ck_assert_uint_eq(tmp32, 15U);
+	ck_assert_uint_ge(tmp32, 12U);
+	ck_assert_uint_le(tmp32, 15U);
 	tmp32 = 0;
 	ck_assert_int_eq(
 		rtnl_nh_get_res_group_unbalanced_timer(grp_kernel, &tmp32), 0);
-	ck_assert_uint_eq(tmp32, 25U);
+	ck_assert_uint_ge(tmp32, 24U);
+	ck_assert_uint_le(tmp32, 25U);
 }
 END_TEST