logging format update
---------------------
Key: TS-1064
URL: https://issues.apache.org/jira/browse/TS-1064
Project: Traffic Server
Issue Type: Task
Components: Documentation
Reporter: Zhao Yongming
Assignee: Zhao Yongming
Priority: Trivial
%<phi> is not documented so far, we should make sure all those hiding items
documented.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
