bugfixes:
- Fix NameError nxos_facts (https://github.com/ansible/ansible/pull/48981).
- Fix N3K power supply facts (https://github.com/ansible/ansible/pull/49150).
- Fix lldp and cdp neighbors information (https://github.com/ansible/ansible/pull/48318)(https://github.com/ansible/ansible/pull/48087)(https://github.com/ansible/ansible/pull/49024).