Fix OS detection for NFS config
Fix OS detection for NFS config

Bug: T167275
Change-Id: I2f1decf0f63f224daa3327e9a705313c4688c9e8

wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant,wikimedia/mediawiki-vagrant