Avoid running gqt on darwin
Avoid running gqt on darwin

No working OCI implementation yet

Signed-off-by: Gareth Smith <97ec7f0e37ed298c6c7d61e7dba0820f215e55e4@pivotal.io>

cloudfoundry-incubator/guardian,cloudfoundry-incubator/guardian,cloudfoundry-incubator/guardian