[CV] [CLI] Fix mypy failure in CV

Failed mypy type checking in cbbackup

Re running: mypy --ignore-missing-imports cbbackup

x509_adapter.py:28: error: Library stubs not installed for "OpenSSL.crypto" [import] x509_adapter.py:28: note: Hint: "python3 -m pip install types-pyOpenSSL" x509_adapter.py:29: error: Library stubs not installed for "OpenSSL.SSL" [import] x509_adapter.py:30: error: Library stubs not installed for "requests.adapters" [import] x509_adapter.py:31: error: Library stubs not installed for "requests.packages.urllib3.contrib.pyopenssl" [import] cluster_manager.py:13: error: Library stubs not installed for "requests" [import] cluster_manager.py:13: note: Hint: "python3 -m pip install types-requests" cluster_manager.py:13: note: (or run "mypy --install-types" to install all missing stub packages) cluster_manager.py:13: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports pump.py:42: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump.py:43: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump.py:44: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_json.py:22: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_sfd.py:197: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_sfd.py:283: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_mc.py:103: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_mc.py:104: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_mc.py:106: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] pump_bfd.py:677: note: By default the bodies of untyped functions are not checked, consider using --check-untyped-defs [annotation-unchecked] Found 5 errors in 2 files (checked 1 source file)