openshift-java-client: incompatibility with OpenShift Enterprise and Origin when using the remote-user authentication plugin

OpenShift Enterprise and Origin both ship an authentication plugin that allows parts of authentication to be handled by Apache and other parts to be delegated to the openshift-origin-controller codebase. I've found that all versions of openshift-java-client after 2.3.0.Final change a (poorly documented) requirement for the OpenShift remote-user plugin.

In order for a request to bypass the Apache authentication and passthrough to the OpenShift Broker the user-agent header is inspected. If the user-agent is 'OpenShift' then the Broker will require an encrypted authentication token. Today this is used by the jenkins cartridge but I believe it's also still used for scaling.

You can see this for details:
https://github.com/openshift/origin-server/blob/master/documentation/archive/how_nodes_act_on_behalf_of_users.md#how-the-encrypted-token-is-used

In 2.3.0.Final of the openshift-java-client the user-agent was 'OpenShift' however all versions after this set the user-agent to the java version (eg, User-Agent: Java/1.7.0_45).