netns name missing one character

[pedro-r-marques]

The opencontrail-kubelet plugin creates a network namespace that is off by one character from the docker id.

e.g. for an infrastructure container such as:
a23f49f47745 openshift/origin-pod:v1.0.6 "/pod" 19 hours ago Up 19 hours 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp, 0.0.0.0:1936->1936/tcp k8s_POD.91423d59_router-1-mywun_default_81456877-7cf4-11e5-b359-020c1eb2cbf1_7217ddf5

The netns created is "a23f49f4774" (missing the trailing character).