Fix the wrong key name in nova REST API

The scheduler filter can be specified when create a server.
In the filter body of this example, the 'hypervisor' and
'near' is not valid key name, fix this.

Change-Id: Id03d9fae39cdbc053578575079a21ab72d15aed8
Add token credential to authenticate method

Closes-Bug: #1208607

Change-Id: I4af5f32c3a2501395ea6452b5bff4f2a0dcce2a0
author: diane fleming
Merge "Fix the wrong key name in nova REST API"