testing: ensure we provide the test dir to pytest

The RPM and vmcore test runners omitted the "tests" directoy. This meant
that pytest was searching the entire working directory for tests. This
is fine in CI tests, because there isn't much extra data in the git
checkout. But for local/developer test runs, this is a problem, because
the "testdata" directory contains lots of extra data, including
extracted RPMs which have some python code. This causes errors when
pytest attempts to collect and run tests from those files.

The heavyvm and litevm tests already provide the tests/ directory as a
command line argument.

Orabug: 37307170
Signed-off-by: Stephen Brennan <[email protected]>

testing/rpm.py

@@ -59,6 +59,7 @@ def do_test(ident: str, args: List[str], ctf: bool = False) -> str:
         sys.executable,
         "-m",
         "pytest",
+        "tests/",
     ]
     if ctf:
         cmd.append("--ctf")

testing/vmcore/test.py

@@ -91,6 +91,7 @@ def should_run_vmcore(name: str) -> bool:
                 sys.executable,
                 "-m",
                 "pytest",
+                "tests/",
                 f"--vmcore={core_name}",
                 f"--vmcore-dir={str(CORE_DIR)}",
                 f"--junitxml={xml_run.name}",