There are a lot of spurious exceptions in the kubernetes kubelet logs
like:
E1018 21:03:09.616581 22780 fs.go:332] Stat fs failed. Error: no such
file or directory
Since we know that calling syscall.Statfs will just fail when the path
does not exist, we should just skip making the call.
NOTE: fixing 2017->2018 problems in build by running `./build/jenkins_e2e.sh`
