The notify system test incorrectly detects startup notify rate error.

S:notify:Wed Dec  5 02:59:58 UTC 2018
T:notify:1:A
A:notify:System test notify
I:notify:PORTRANGE:10300 - 10399
I:notify:checking initial status (1)
I:notify:checking startup notify rate limit (2)
I:notify:failed
I:notify:reloading with example2 using HUP and waiting up to 45 seconds
I:notify:checking notify message was logged (3)
I:notify:checking example2 loaded (4)
I:notify:checking example2 contents have been transferred after HUP reload (5)
I:notify:stopping master and restarting with example4 then waiting up to 45 seconds
I:notify:checking notify message was logged (6)
I:notify:checking example4 loaded (7)
I:notify:checking example4 contents have been transfered after restart (8)
I:notify:checking notify to alternate port with master inheritance (9)
I:notify:checking notify to multiple views using tsig (10)
I:notify:exit status: 1
R:notify:FAIL
E:notify:Wed Dec  5 03:00:22 UTC 2018

The actual notify messages were sent out at ~200ms intervals with then notify expected at 00.999 being logged at 01.005 leading to 6 messages being logged in 01.XXX.

05-Dec-2018 02:59:58.999 zone x1/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 02:59:59.201 zone x21/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 02:59:59.398 zone x21/IN: sending notify to 10.53.0.4#10301
05-Dec-2018 02:59:59.598 zone x12/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 02:59:59.798 zone x13/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:00.198 zone x11/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:00.398 zone x14/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:00.599 zone x10/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:00.799 zone x20/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:01.005 zone x19/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:01.199 zone x18/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:01.399 zone x5/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:01.599 zone x7/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:01.799 zone x8/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:01.999 zone x17/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:02.199 zone x2/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:02.399 zone x9/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:02.599 zone x16/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:02.799 zone x4/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:02.999 zone x3/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:03.199 zone x15/IN: sending notify to 10.53.0.3#10300
05-Dec-2018 03:00:03.400 zone x6/IN: sending notify to 10.53.0.3#10300