WIP PoC to allow not rerunning a cached dependency

* requires RKrahl/pytest-dependency#77, must
  document that somewhere (but it's "just convenience")

FIXME:
* only demonstrates the hook, does nto yet probe the cache

Author: ydirson

tests/install/conftest.py

@@ -5,6 +5,11 @@
 
 from lib.commands import local_cmd, scp, ssh
 
+def pytest_dependency_override_skip(item: pytest.Item, dependency: str, scope: str) -> bool:
+    if dependency == "TestInstallNested::test_upgrade_nested_821_uefi":
+        return True
+    return False
+
 # auto-collect tests that are dependencies of selected ones
 # adapted from RKrahl/pytest-dependency#56
 def collect_dependencies(config, item, items):