Author: Zig Tan
MDL-61881 report_configlog: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=07dd873f639b447ccc13c52bdbe522b74ec6cbbe
http://github.com/moodle/moodle/commit/07dd873f639b447ccc13c52bdbe522b74ec6cbbe
+ 3.4 en [privacy:metadata,report_configlog]