Support for Openshift

[blublinsky]

I was trying to follow tutorial https://github.com/solo-io/workshops/blob/master/gloo-mesh/README-openshift.md, with creating cluster on IBM cloud and discovered that usage of the Kubernete contexts does not work. When I am creating clusters, they all are using a single user, so when I try to log into a second cluster, a token in kubectl is getting overwrited. The workaround for this is to explicitly specify a token in kubectl command, something like:

kubectl --context $MGMT_CONTEXT --token="token" get nodes

Unfortunately meshctl does not allow to specify --token="token" so nothing works.

Any suggestions?