fixup! tests/conftest: allow a unique shell for every test

tests/conftest.py

@@ -175,8 +175,8 @@ class BoardShell(nsfarm.cli.Shell):
         super().__init__(self._board_access([]))
 
 
-@pytest.fixture(name="fixture_board_access", scope="package")
-def fixture_fixture_board_access(board_access) -> BoardShell:
+@pytest.fixture(name="board_access_for_fixture", scope="package")
+def fixture_board_access_for_fixture(board_access) -> BoardShell:
     """This is single instance of cli.Shell received from board_access that should be used in fixtures only.
     The reason for this is that we have load of fixtures before we ever get to single tests and spawning shell for every
     single one of the would get spammy very fast. We expect fixtures to be well behaved and thus we give them one shared