Temporary fix for client-go "shorthand" api

[aminick]

Client-go is suppose to support a short hand way to to make requests to the cluster based on the current client configuration, for example, if a client config is set with a Bearer Token under some tenant, It's should be possible to make requests like this:

client.CoreV1().Pods("default").List(options)

This should response with pods information for this specific tenant.
However, due to an error identified here, this short hand api is not currently supported.
Thus, a temporary fix is provided through out the code base:

client.CoreV1().PodsWithMultiTenancy("default", "").List(options)

This works exactly the same but it's more wordy. When that issue is resolved, they should be all changed back to the short hand version.