Refactor client side xmlrpc server code.

Break out code for xmlrpc server from the code that exposes the faft functions
into two files (rpc_server.py and rpc_functions.py).

Also break out config values used for the rpc server into anther module which
can be seen by server side FAFT code which tells autotest to spin up the
rpc server.

BUG=None
TEST=Manually ran tests at desk against link device.

Change-Id: I9d8b2c3946c34fac247e8c4263f9620cba1fcd28
Reviewed-on: https://gerrit.chromium.org/gerrit/65873
Reviewed-by: Dennis Jeffrey <dennisjeffrey@chromium.org>
Commit-Queue: Yusuf Mohsinally <mohsinally@chromium.org>
Tested-by: Yusuf Mohsinally <mohsinally@chromium.org>
4 files changed