Defer console startup until after API startup

Consoles starting up would potentially delay API availaility.  Change
by having the API having ample time to startup, then commence the
busy work of starting cnosole sessions.

confluent_server/confluent/main.py

@@ -209,7 +209,6 @@ def run():
         os.umask(oumask)
     http_bind_host, http_bind_port = _get_connector_config('http')
     sock_bind_host, sock_bind_port = _get_connector_config('socket')
-    consoleserver.start_console_sessions()
     webservice = httpapi.HttpApi(http_bind_host, http_bind_port)
     webservice.start()
     try:
@@ -218,6 +217,8 @@ def run():
     except NameError:
         pass
     atexit.register(doexit)
+    eventlet.sleep(1)
+    consoleserver.start_console_sessions()
     while 1:
         eventlet.sleep(100)