use asyncio_mode = auto and fixtures for mqtt and conf server

requirements-test.txt

@@ -4,18 +4,11 @@ pylint==2.12.2
 pytest==6.2.5
 pytest-cov==3.0.0
 types-cachetools==4.2.9
-pytest-asyncio
-pytest-aiohttp
-testfixtures
-pytest-env
-pytest-timeout
+pytest-asyncio==0.17.2
+pytest-aiohttp==1.0.3
+testfixtures==6.18.3
+pytest-env==0.6.2
+pytest-timeout==2.1.0
 
 #pbr = "*"
-#pytest-aiohttp = "*"
-#pytest-cov = "*"
-#testfixtures = "*"
-#codecov = "*"
 #autoflake = "*"
-#pytest-env = "*"
-#pytest = "*"
-#pytest-asyncio = "*"