Add common ignore message for NTP Clock Unsynchronized message (#2383)

During service restart, e.g. config reload, the NTP Clock may not be able to sync temporarily and show this message 
`INFO ntpd[3416]: kernel reports TIME_ERROR: 0x41: Clock Unsynchronized` in the syslog. 
This would be a temporary state and could be ignore during perform the testing

ansible/roles/test/files/tools/loganalyzer/loganalyzer_common_ignore.txt

@@ -1,4 +1,5 @@
 r, ".* ERR ntpd.*routing socket reports: No buffer space available.*"
+r, ".* INFO ntpd.*kernel reports TIME_ERROR: 0x41: Clock Unsynchronized.*"
 r, ".* ERR liblogging-stdlog: omfwd: error 11 sending via udp: Resource temporarily unavailable.*"
 r, ".* ERR syncd#syncd: brcm_sai_get_port_stats:.* port stats get failed with error.*"
 r, ".* NOTICE kernel:.*profile=""/usr/sbin/ntpd"" name=""sbin"" pid=.* comm=""ntpd"" requested_mask=.*"