Misc typo in neutronclient

Added a missing description for parameter node in the
docstring of function _from_xml_node

Change-Id: I4534dbf43e45b94d44d0c53d910987b8fad1cbdf
Closes-Bug: #1255994
Remove an unused imported module

The urlparse module is imported in neutronclient/client.py but not used, so we
can safely remove it.

Change-Id: Ia9e950e754d00ee4f28172f3e685b892748991e2
Merge "Remove an unused imported module"
Merge "Misc typo in neutronclient"