tests: converted a simple DNSSEC test for new conditions

tests/testdata/iter_validate.rpl

 ; config options
 server:
 	trust-anchor: ". 3600 IN DS 19036 8 2 49AAC11D7B6F6446702E54A1607371607A1A41855200FD2CE1CDDE32F24E8FB5"
-	val-override-date: "1436477112"
+	val-override-date: "1437625000"
 
 stub-zone:
 	name: "."
@@ -104,7 +104,7 @@ ENTRY_END
 
 RANGE_END
 
-STEP 0 TIME_PASSES ELAPSE 1437660722
+;STEP 0 TIME_PASSES ELAPSE 1000
 
 STEP 1 QUERY
 ENTRY_BEGIN