Start dashboard on all nodes and other small fixes. (#4428)

* Start reporter on all nodes.

* More fixes

python/ray/dashboard/dashboard.py

@@ -181,7 +181,7 @@ class Dashboard(object):
     def run(self):
         self.log_dashboard_url()
         self.node_stats.start()
-        aiohttp.web.run_app(self.app, host=self.ip, port=self.port)
+        aiohttp.web.run_app(self.app, host="0.0.0.0", port=self.port)
 
 
 class NodeStats(threading.Thread):

python/ray/node.py

@@ -432,7 +432,7 @@ class Node(object):
 
         self.start_plasma_store()
         self.start_raylet()
-        if PY3 and self._ray_params.include_webui:
+        if PY3:
             self.start_reporter()
 
         if self._ray_params.include_log_monitor:

python/ray/scripts/scripts.py

@@ -151,7 +151,7 @@ def cli(logging_level, logging_format):
     "--include-webui",
     is_flag=True,
     default=False,
-    help="provide this argument if the UI should not be started")
+    help="provide this argument if the UI should be started")
 @click.option(
     "--block",
     is_flag=True,