fixup the examples

Author: vladak

examples/cpython/minimqtt_adafruitio_cpython.py

@@ -46,8 +46,7 @@ def message(client, topic, message):
 
 # Set up a MiniMQTT Client
 mqtt_client = MQTT.MQTT(
-    broker=secrets["broker"],
-    port=1883,
+    broker="io.adafruit.com",
     username=secrets["aio_username"],
     password=secrets["aio_key"],
     socket_pool=socket,

examples/ethernet/minimqtt_simpletest_eth.py

@@ -67,8 +67,12 @@ def publish(client, userdata, topic, pid):
 MQTT.set_socket(socket, eth)
 
 # Set up a MiniMQTT Client
+# NOTE: We'll need to connect insecurely for ethernet configurations.
 client = MQTT.MQTT(
-    broker=secrets["broker"], username=secrets["user"], password=secrets["pass"]
+    broker=secrets["broker"],
+    username=secrets["user"],
+    password=secrets["pass"],
+    is_ssl=False,
 )
 
 # Connect callback handlers to client

examples/native_networking/minimqtt_adafruitio_native_networking.py

@@ -62,7 +62,7 @@ def message(client, topic, message):
 
 # Set up a MiniMQTT Client
 mqtt_client = MQTT.MQTT(
-    broker=secrets["broker"],
+    broker="io.adafruit.com",
     port=secrets["port"],
     username=secrets["aio_username"],
     password=secrets["aio_key"],