While trying to run "make test" on my local system the tests are not running properly due to lack of space.
Getting numerous errors of the type: "write /tmp/go-build095530034/b510/vet.cfg: no space left on device". Notably when I change the size of the mounted partition in this line:
https://github.com/istio/istio/blame/master/security/cmd/flexvolume/driver/driver.go#L105
the tests executed without the "out of space" errors. A couple other notable points.

• Others in my group can run the tests just fine from the same code base, although their environments are different.
• The /tmp partition is left mounted at the end of running "make test" on my system while I believe it should be unmounted by the driver.go code.
• Before running the tests /tmp is not specifically mounted
• Ubuntu release:
  Distributor ID: Ubuntu
  Description: Ubuntu 16.04.3 LTS
  Release: 16.04
  Codename: xenial
• K8s version:
  kubectl version
  Client Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.2", GitCommit:"5fa2db2bd46ac79e5e00a4e6ed24191080aa463b", GitTreeState:"clean", BuildDate:"2018-01-18T10:09:24Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}
  Server Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.3", GitCommit:"d2835416544f298c919e2ead3be3d0864b52323b", GitTreeState:"clean", BuildDate:"2018-02-07T11:55:20Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}