HITL: override addopts to disable xdist for hardware tests (#2370)

Author: adeebshihadeh

Jenkinsfile

@@ -114,7 +114,7 @@ pipeline {
                   ["build", "scons"],
                   ["flash", "cd scripts/ && ./reflash_internal_panda.py"],
                   ["flash jungle", "cd board/jungle && ./flash.py --all"],
-                  ["test", "cd tests/hitl && pytest --durations=0 2*.py [5-9]*.py"],
+                  ["test", "cd tests/hitl && pytest -o 'addopts=' --durations=0 2*.py [5-9]*.py"],
                 ])
               }
             }
@@ -126,7 +126,7 @@ pipeline {
                   ["build", "scons"],
                   ["flash", "cd scripts/ && ./reflash_internal_panda.py"],
                   ["flash jungle", "cd board/jungle && ./flash.py --all"],
-                  ["test", "cd tests/hitl && pytest --durations=0 2*.py [5-9]*.py"],
+                  ["test", "cd tests/hitl && pytest -o 'addopts=' --durations=0 2*.py [5-9]*.py"],
                 ])
               }
             }

tests/hitl/conftest.py

@@ -53,6 +53,9 @@ def pytest_configure(config):
   config.addinivalue_line(
     "markers", "panda_expect_can_error: mark test to ignore CAN health errors"
   )
+  config.addinivalue_line(
+    "markers", "timeout: set test timeout in seconds"
+  )
 
 @pytest.hookimpl(tryfirst=True)
 def pytest_collection_modifyitems(items):