Remove pytest<7 compatibility hacks

Minimum pytest version has been bumped to 7.0.0, thus these are no
longer needed.

(cherry picked from commit e276c3d5bd)

bin/tests/system/conftest.py

@@ -18,7 +18,7 @@ import shutil
 import subprocess
 import tempfile
 import time
-from typing import Any, Dict, List, Optional
+from typing import Dict, List, Optional
 
 import pytest
 
@@ -31,20 +31,6 @@ import isctest
 # pylint: disable=redefined-outer-name
 
 
-# ----------------- Older pytest / xdist compatibility -------------------
-# As of 2023-01-11, the minimal supported pytest / xdist versions are
-# determined by what is available in EL8/EPEL8:
-# - pytest 3.4.2
-# - pytest-xdist 1.24.1
-_pytest_ver = pytest.__version__.split(".")
-_pytest_major_ver = int(_pytest_ver[0])
-if _pytest_major_ver < 7:
-    # pytest.Stash/pytest.StashKey mechanism has been added in 7.0.0
-    # for older versions, use regular dictionary with string keys instead
-    FIXTURE_OK = "fixture_ok"  # type: Any
-else:
-    FIXTURE_OK = pytest.StashKey[bool]()  # pylint: disable=no-member
-
 # ----------------------- Globals definition -----------------------------
 
 XDIST_WORKER = os.environ.get("PYTEST_XDIST_WORKER", "")
@@ -328,19 +314,10 @@ def system_test_name(request):
     return path.parent.name
 
 
-def _get_marker(node, marker):
-    try:
-        # pytest >= 4.x
-        return node.get_closest_marker(marker)
-    except AttributeError:
-        # pytest < 4.x
-        return node.get_marker(marker)
-
-
 @pytest.fixture(autouse=True)
 def wait_for_zones_loaded(request, servers):
     """Wait for all zones to be loaded by specified named instances."""
-    instances = _get_marker(request.node, "requires_zones_loaded")
+    instances = request.node.get_closest_marker("requires_zones_loaded")
     if not instances:
         return
 
@@ -480,7 +457,7 @@ def system_test_dir(request, env, system_test_name, expected_artifacts):
     shutil.copytree(system_test_root / system_test_name, testdir)
 
     # Create a convenience symlink with a stable and predictable name
-    module_name = SYMLINK_REPLACEMENT_RE.sub(r"\1", str(_get_node_path(request.node)))
+    module_name = SYMLINK_REPLACEMENT_RE.sub(r"\1", str(request.node.path))
     symlink_dst = system_test_root / module_name
     unlink(symlink_dst)
     symlink_dst.symlink_to(os.path.relpath(testdir, start=system_test_root))
@@ -514,7 +491,7 @@ def system_test_dir(request, env, system_test_name, expected_artifacts):
                 "test failure detected, keeping temporary directory %s", testdir
             )
             keep = True
-        elif not request.node.stash[FIXTURE_OK]:
+        elif not request.node.stash["fixture_ok"]:
             isctest.log.debug(
                 "test setup/teardown issue detected, keeping temporary directory %s",
                 testdir,
@@ -581,15 +558,6 @@ def _run_script(
         isctest.log.debug("  exited with %d", returncode)
 
 
-def _get_node_path(node) -> Path:
-    if isinstance(node.parent, pytest.Session):
-        if _pytest_major_ver >= 8:
-            return Path()
-        return Path(node.name)
-    assert node.parent is not None
-    return _get_node_path(node.parent) / node.name
-
-
 @pytest.fixture(scope="module")
 def shell(env, system_test_dir):
     """Function to call a shell script with arguments."""
@@ -703,13 +671,11 @@ def system_test(
             pytest.fail(f"get_core_dumps.sh exited with {exc.returncode}")
 
     os.environ.update(env)  # Ensure pytests have the same env vars as shell tests.
-    isctest.log.info(f"test started: {_get_node_path(request.node)}")
+    isctest.log.info(f"test started: {request.node.path}")
     port = int(env["PORT"])
     isctest.log.info("using port range: <%d, %d>", port, port + PORTS_PER_TEST - 1)
 
-    if not hasattr(request.node, "stash"):  # compatibility with pytest<7.0.0
-        request.node.stash = {}  # use regular dict instead of pytest.Stash
-    request.node.stash[FIXTURE_OK] = True
+    request.node.stash["fixture_ok"] = True
 
     # Perform checks which may skip this test.
     check_net_interfaces()
@@ -718,7 +684,7 @@ def system_test(
     # Store the fact that this fixture hasn't successfully finished yet.
     # This is checked before temporary directory teardown to decide whether
     # it's okay to remove the directory.
-    request.node.stash[FIXTURE_OK] = False
+    request.node.stash["fixture_ok"] = False
 
     setup_test()
     try:
@@ -729,7 +695,7 @@ def system_test(
         isctest.log.debug("test(s) finished")
         stop_servers()
         get_core_dumps()
-        request.node.stash[FIXTURE_OK] = True
+        request.node.stash["fixture_ok"] = True
 
 
 @pytest.fixture(scope="module")