Bump eventlet from 0.19.0 to 0.31.0

Bumps [eventlet](https://github.com/eventlet/eventlet) from 0.19.0 to 0.31.0.
- [Release notes](https://github.com/eventlet/eventlet/releases)
- [Changelog](https://github.com/eventlet/eventlet/blob/master/NEWS)
- [Commits](https://github.com/eventlet/eventlet/compare/v0.19.0...v0.31.0)

Signed-off-by: dependabot[bot] <support@github.com>

install.sh

@@ -34,7 +34,7 @@ show_menu () {
            if [ $? = 0 ]; then
              apt-get -y update; apt-get -y upgrade;
            fi
-	   
+
            apt-get -y install python-setuptools
            easy_install pip
            apt-get -y install python-dev

modules/fermenter/__init__.py

@@ -223,6 +223,8 @@ class FermenterView(BaseView):
 
                     def run(instance):
                         instance.run()
+                        fermenter.state = not fermenter.state
+                        cbpi.emit("UPDATE_FERMENTER", cbpi.cache.get(self.cache_key).get(id))
 
                     t = cbpi.socketio.start_background_task(target=run, instance=instance)
                 fermenter.state = not fermenter.state

requirements.txt

@@ -1,6 +1,6 @@
 Flask==0.12.4
 Flask-SocketIO==2.6.2
-eventlet==0.19.0
+eventlet==0.31.0
 greenlet==0.4.10
 python-dateutil==2.5.3
 python-engineio==0.9.2