Travis: Initiating build for commit 'fa367aa6dc0a65ea9f776fd04a23cacd8e8038f8' on branch 'iis_advanced_log_importing': Refs #6795, add --iis-map-field option to allow users of log importer script to parse log files created using the IIS Advanced Logging module. Includes tests for such a case (including python unit test + PHP System test).