Log Message:
misc/ruby-ohai: update to 13.4.0

13.4.0 (2017-09-11)

* Add Arch Linux support to package plugin #1042
* Detect LXC if LXC and Docker are on the same host #1055
* Add Azure metadata endpoint support #1033
* Move all requires into the plugin definitions #1045
* Improve detection of Windows EC2 nodes by using UUID information #1052
* Add error handling in Linux filesystem plugin #1047
* Properly handle uptimes over a year on AIX #1049
* Handle situations where /proc/cpuinfo lacks core data #1038