Fix bug for #34 and add func get_lldp_neighbors_detail()

[owochen]

Fix bug for #34
Add feature get_lldp_neighbors_detail() for #38

[humbertogaliza]

@owochen thanks for the bug/fix + feat! Do you mind adding a unit test as well? Cheers!

[mathieumd]

Thanks @owochen!

It's working, my NetBox's LLDP Neighbors tab finally has values in LLDP Device and LLDP Interface.

However, it looks like it's not retrieving all neighbors. For example, on XGE0/0/3 I have 6 hosts shown by display lldp neighbor (see below, 1 physical and 5 VMs), but I only get a single one in the table (the last one, a VM).
(BTW, looks like ESXi hosts -- on the first NIC below -- are not replying to LLDP, contrary to Proxmox PVE -- see the next sample)

XGigabitEthernet0/0/3 has 6 neighbor(s):

Neighbor index :1
Chassis type   :MAC address
Chassis ID     :d404-e66d-xxyy
Port ID type   :MAC address
Port ID        :d404-e66d-xxyy
Port description    :NIC 1/10Gb SFP+ DA
System name         :10Gb 2-port SFP+ BCM57412 Adapter fw_version:AFW_230.0.168.0
System description  :230.0.168.0 fw_version:AFW_230.0.168.0
System capabilities supported   :stationOnly
System capabilities enabled     :stationOnly
Management address type  :all802
Management address value :d404-e66d-xxyy
OID  :
Expired time   :118s



Neighbor index :2
Chassis type   :Locally assigned
Chassis ID     :VMware virtual machine (netbox01)
Port ID type   :MAC address
Port ID        :0050-568b-xyxy
Port description    :ens192
System name         :netbox01.example.com
System description  :Ubuntu 22.04.4 LTS Linux 5.15.0-122-generic #132-Ubuntu SMP Thu Aug 29 13:45:52 UTC 2024 x86_64
Management address type  :ipv4
Management address value :10.xy.xy.xy
OID  :
Management address type  :ipv6
Management address value :FE80::250:56FF:FE8B:xyxy
OID  :
Expired time   :101s


Auto-negotiation supported    :No
Auto-negotiation enabled      :No
OperMau   :speed(Unknown)/duplex(Unknown)

Link aggregation supported:Yes
Link aggregation enabled :No
Aggregation port ID      :0


Neighbor index :3
Chassis type   :Locally assigned
Chassis ID     :VMware virtual machine (gitlab-runner01)
Port ID type   :MAC address
Port ID        :0050-568b-xyyx
Port description    :ens33
System name         :gitlab-runner01.example.com
System description  :Ubuntu 22.04.3 LTS Linux 5.15.0-101-generic #111-Ubuntu SMP Tue Mar 5 20:16:58 UTC 2024 x86_64
Management address type  :ipv4
Management address value :10.xy.yx.yx
OID  :
Management address type  :ipv6
Management address value :FE80::250:56FF:FE8B:xyyx
OID  :
Expired time   :101s


Auto-negotiation supported    :No
Auto-negotiation enabled      :No
OperMau   :speed(Unknown)/duplex(Unknown)

Link aggregation supported:Yes
Link aggregation enabled :No
Aggregation port ID      :0


Neighbor index :4
Chassis type   :Locally assigned
Chassis ID     :VMware virtual machine (apt-proxy01)
Port ID type   :MAC address
Port ID        :0050-568b-yxyx
Port description    :ens192
System name         :apt-proxy01.example.com
System description  :Ubuntu 22.04.4 LTS Linux 5.15.0-122-generic #132-Ubuntu SMP Thu Aug 29 13:45:52 UTC 2024 x86_64
Management address type  :ipv4
Management address value :10.yx.yx.xx
OID  :
Management address type  :ipv6
Management address value :FE80::250:56FF:FE8B:xyxy
OID  :
Expired time   :101s


Auto-negotiation supported    :No
Auto-negotiation enabled      :No
OperMau   :speed(Unknown)/duplex(Unknown)

Link aggregation supported:Yes
Link aggregation enabled :No
Aggregation port ID      :0


Neighbor index :5
[...]

As another example, on XGE0/0/13 I have 2 hosts (both the same physical host), but only the last one is shown:

XGigabitEthernet0/0/13 has 2 neighbor(s):

Neighbor index :1
Chassis type   :MAC address
Chassis ID     :f403-43f8-xxxx
Port ID type   :MAC address
Port ID        :f403-43f8-xxxx
Port description    :NIC 1/10Gb SFP+ DA
System name         :HPE Eth 10Gb 2p 537SFP+ Adptr fw_version:AFW_230.0.168.0
System description  :SU 10G/1G GEN3 x8 14W fw_version:AFW_230.0.168.0
System capabilities supported   :stationOnly
System capabilities enabled     :stationOnly
Management address type  :all802
Management address value :f403-43f8-xxxx
OID  :
Expired time   :107s



Neighbor index :2
Chassis type   :MAC address
Chassis ID     :9440-c945-yyyy
Port ID type   :MAC address
Port ID        :f403-43f8-xxxx
Port description    :ens2f1np1
System name         :pve02.example.com
System description  :Debian GNU/Linux 12 (bookworm) Linux 6.8.12-2-pve #1 SMP PREEMPT_DYNAMIC PMX 6.8.12-2 (2024-09-05T10:03Z) x86_64
Management address type  :ipv4
Management address value :10.yy.yy.yy
OID  :
Management address type  :ipv6
Management address value :FE80::9640:C9FF:FE45:yyyy
OID  :
Expired time   :93s


Auto-negotiation supported    :Yes
Auto-negotiation enabled      :Yes
OperMau   :speed(Unknown)/duplex(Unknown)

Link aggregation supported:Yes
Link aggregation enabled :Yes
Aggregation port ID      :14

Is it the expected behavior?