Remove unneeded setting of SO_REUSEADDR.

This has been in eventlet.listen() since version 0.15.

Change-Id: Ib77b28231a2180f1ea082f356c4687c39681a6f7

swift/common/wsgi.py

@@ -199,7 +199,6 @@ def get_socket(conf):
         raise Exception(_('Could not bind to %s:%s '
                           'after trying for %s seconds') % (
                               bind_addr[0], bind_addr[1], bind_timeout))
-    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
     # in my experience, sockets can hang around forever without keepalive
     sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
     sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)

test/unit/common/test_wsgi.py

@@ -276,7 +276,6 @@ class TestWSGI(unittest.TestCase):
             self.assertTrue(isinstance(sock, MockSocket))
             expected_socket_opts = {
                 socket.SOL_SOCKET: {
-                    socket.SO_REUSEADDR: 1,
                     socket.SO_KEEPALIVE: 1,
                 },
                 socket.IPPROTO_TCP: {