The code using 'python-escalatorclient' as the client's package name. But the true...

The code using 'python-escalatorclient' as the client's package name. But the true name is 'escalatorclient'.
Now, when the shell command 'escalator' was run, the system said:
Exception: Versioning for this project requires either an sdist tarball, or access to an upstream git repository. It's also possible that there is a mismatch between the package name in setup.cfg and the argument given to pbr.version.VersionInfo. Project name python-escalatorclient was given, but was not able to be found.

Change-Id: Ie135038cec8a3475039f280e791a02b7308e39ae
Signed-off-by: Kong Wei<kong.wei2@zte.com.cn>