Adopt cloudshell-snmp 6.0 / cloudshell-snmp-autoload 3.0 (pysnmp 7) — Python 3.12/3.13

[nahumtimerman]

Adopts cloudshell-snmp 6.0.0 and cloudshell-snmp-autoload 3.0.0 (pysnmp 7), adding Python 3.12/3.13 support. Validated against the same snmpsim recording set used for the cloudshell-networking-cisco migration (143-device parity gate); the BIG-IP i2600 recording autoloads successfully on Python 3.9 and 3.13.

Changes

• requirements.txt: cloudshell-snmp>=6.0,<7.0, cloudshell-snmp-autoload>=3.0,<4.0; attrs>=21,<23; standard-telnetlib on Python >= 3.13 (stdlib telnetlib was removed and cloudshell-cli 4.x imports it).
• BigIPAutoloadFlow: autoload-3.x GenericSNMPAutoload API — resource_model moves to the constructor, discover() takes only supported_os.
• Port customization ported from the removed autoload-1.x SnmpIfTable to the 3.x PortsTable service: new F5PortsTable keeps dots legal in F5 port names (e.g. 1.1) and excludes mgmt/management/loopback/null, matching the old F5SnmpIfTable behavior. F5FirewallGenericSNMPAutoload now overrides port_table_service instead of if_table_service.
• Tests: cloudshell-shell-networking-standard>=6.0,<7.0 (shell-standards 2.x).
• Packaging/CI: python_requires>=3.9, classifiers 3.9–3.13, version 2.1.0, tox envlist py39, sdist without --format zip, CI matrix py39 only, isort pre-commit hook 5.10.1 -> 5.12.0 (5.10.1 no longer installs).

Testing

• Unit tests pass on Python 3.9 and 3.13 (fresh venvs); full package import sweep is clean on both.
• Live smoke: snmpsim recording rec059 (BIG-IP i2600, 12.1.2), full F5FirewallGenericSNMPAutoload.discover on both Pythons — 1 chassis, 7 ports (dotted names included, mgmt/loopback excluded), system attributes populated.

🤖 Generated with Claude Code

[nahumtimerman]

Superseded by #12, which is the same change pushed as an in-repo branch so the org reusable workflows can check it out (they can't check out forks). Closing this one.