Tests are running on a pretty much loaded machine where

CPU load can spike significantly thus it is unpredictable the timeout.
To be on safe side and avoid false positives increase timeout.

tests/e2e_tests/test_beremiz.py

@@ -64,7 +64,7 @@ class BeremizTest(e2e.EndToEndTestCase):
 
   def test_plc_increment_run(self):
     NUMBER_OF_CHECKS = 100
-    TIMEOUT = 2
+    TIMEOUT = 3
     OPC_UA_IDENTIFIER = "ns=1;s=i2c0.relay0"
 
     # give it some time for services(runtime & coupler) to warm up, connect and run