package/python-paho-mqtt: fix package for python 3.10

Fixes the following error on calling mqtt.publish():

  File "/usr/lib/python3.10/site-packages/paho/mqtt/publish.py", line 222, in single
    multiple([msg], hostname, port, client_id, keepalive, will, auth, tls,
  File "/usr/lib/python3.10/site-packages/paho/mqtt/publish.py", line 126, in multiple
    if not isinstance(msgs, collections.Iterable):
AttributeError: module 'collections' has no attribute 'Iterable'

Backported from https://github.com/eclipse/paho.mqtt.python/pull/497/

This was deprecated in python 3.9 and stopped working in python 3.10

Signed-off-by: Marcus Hoffmann <marcus.hoffmann@othermo.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 2526a2f51fce00084a645aec0bdae5471c5ab626)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-paho-mqtt/0001-fix-publish-for-python-3-10.patch

@@ -0,0 +1,37 @@
+From e1c45570f61f9d6b28f8604c8a8cd6dd94f959ed Mon Sep 17 00:00:00 2001
+From: Brishen Hawkins <brishen.hawkins@gmail.com>
+Date: Tue, 9 Jun 2020 00:18:39 -0600
+Subject: [PATCH] Fix for Python 3.9 moving Iterable to collections.abc
+
+Signed-off-by: Brishen Hawkins <brishen.hawkins@gmail.com>
+
+Backported from: e1c45570f61f9d6b28f8604c8a8cd6dd94f959ed
+Signed-off-by: Marcus Hoffmann <marcus.hoffmann@othermo.de>
+---
+ src/paho/mqtt/publish.py | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/paho/mqtt/publish.py b/src/paho/mqtt/publish.py
+index f9f1986e..dcb34ff1 100644
+--- a/src/paho/mqtt/publish.py
++++ b/src/paho/mqtt/publish.py
+@@ -21,6 +21,10 @@
+ from __future__ import absolute_import
+ 
+ import collections
++try:
++    from collections.abc import Iterable
++except ImportError:
++    from collections import Iterable
+ 
+ from . import client as paho
+ from .. import mqtt
+@@ -124,7 +128,7 @@ def multiple(msgs, hostname="localhost", port=1883, client_id="", keepalive=60,
+     proxy_args: a dictionary that will be given to the client.
+     """
+ 
+-    if not isinstance(msgs, collections.Iterable):
++    if not isinstance(msgs, Iterable):
+         raise TypeError('msgs must be an iterable')
+ 
+     client = paho.Client(client_id=client_id, userdata=collections.deque(msgs),