Specify version "V1" in Vault URL not work any more because PythonClient behavior changes

[kongyi-ibm]

Since 2018/07/06. The Vault python client has some change, so the url parameter when call Vault Client don't need to specify the version. IF you build the deploy controller Docker Image after 2018/07/06 and config Vault URL like "http://IP:Port/v1", some job related with Vault will not work.

For Vault URL, you just need to configure it as "http://IP:Port"