Try AppVeyor build with local broker

appveyor.yml

@@ -12,7 +12,17 @@ install:
 
   - cmd: netsh advfirewall set allprofiles state off
 
-  - ps: Start-Process python -ArgumentList 'test\mqttsas2.py', 'mqtt.iotree.co.uk'
+  - ps: Start-Process python -ArgumentList 'test\mqttsas2.py'
+
+  - cmd: python3 --version
+
+  - cmd: git clone git@github.com:eclipse/paho.mqtt.testing.git
+
+  - cmd: cd paho.mqtt.testing\interoperability
+
+  - ps: Start-Process python3 -ArgumentList 'startbroker.py'
+
+  - cmd: cd ..
 
 build_script:
 - cmd: >-

test/CMakeLists.txt

 PROJECT(mqtt-tests C)
 
+SET(MQTT_TEST_BROKER "tcp://localhost:1883" CACHE STRING "Hostname of a test MQTT broker to use")
+SET(MQTT_TEST_PROXY "tcp://localhost:1884" CACHE STRING "Hostname of the test proxy to use")
+SET(MQTT_SSL_HOSTNAME "localhost" CACHE STRING "Hostname of a test SSL MQTT broker to use")
 IF (WIN32)
-  SET(MQTT_TEST_BROKER "tcp://mqtt.iotree.co.uk:1883" CACHE STRING "Hostname of a test MQTT broker to use")
-  SET(MQTT_TEST_PROXY "tcp://localhost:1883" CACHE STRING "Hostname of the test proxy to use")
-  SET(MQTT_SSL_HOSTNAME "mqtt.iotree.co.uk" CACHE STRING "Hostname of a test SSL MQTT broker to use")
   SET(CERTDIR $ENV{APPVEYOR_BUILD_FOLDER}/test/ssl)
 ELSE ()
-  SET(MQTT_TEST_BROKER "tcp://localhost:1883" CACHE STRING "Hostname of a test MQTT broker to use")
-  SET(MQTT_TEST_PROXY "tcp://localhost:1884" CACHE STRING "Hostname of the test proxy to use")
-  SET(MQTT_SSL_HOSTNAME "localhost" CACHE STRING "Hostname of a test SSL MQTT broker to use")
   SET(CERTDIR $ENV{TRAVIS_BUILD_DIR}/test/ssl)
 ENDIF ()