RegistryOsi does not ensure instance registry directory exists

[rezib]

Fatbuildr fails when publishing OSI artifact in an instance registry directory that does not exist yet:

fatbuildrd[60621]: worker-hpckit: [INFO] fatbuildr.registry.formats.osi Creating directory /var/lib/fatbuildr/registry/hpckit/osi
fatbuildrd[60621]: Exception in thread worker-hpckit:
fatbuildrd[60621]: Traceback (most recent call last):
fatbuildrd[60621]:   File "/usr/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
fatbuildrd[60621]:     self.run()
fatbuildrd[60621]:   File "/usr/lib/python3.10/threading.py", line 953, in run
fatbuildrd[60621]:     self._target(*self._args, **self._kwargs)
fatbuildrd[60621]:   File "/usr/lib/python3/dist-packages/fatbuildr/cli/fatbuildrd.py", line 133, in _worker
fatbuildrd[60621]:     instance.tasks_mgr.run(task)
fatbuildrd[60621]:   File "/usr/lib/python3/dist-packages/fatbuildr/tasks/manager.py", line 177, in run
fatbuildrd[60621]:     task.run()
fatbuildrd[60621]:   File "/usr/lib/python3/dist-packages/fatbuildr/builds/__init__.py", line 227, in run
fatbuildrd[60621]:     self.registry.publish(self)
fatbuildrd[60621]:   File "/usr/lib/python3/dist-packages/fatbuildr/registry/formats/osi.py", line 62, in publish
fatbuildrd[60621]:     RegistryOsi.ensure_directory(registry_path)
fatbuildrd[60621]:   File "/usr/lib/python3/dist-packages/fatbuildr/registry/formats/osi.py", line 155, in ensure_directory
fatbuildrd[60621]:     path.mkdir()
fatbuildrd[60621]:   File "/usr/lib/python3.10/pathlib.py", line 1175, in mkdir
fatbuildrd[60621]:     self._accessor.mkdir(self, mode)
fatbuildrd[60621]: FileNotFoundError: [Errno 2] No such file or directory: '/var/lib/fatbuildr/registry/hpckit/osi'