bridge: T4569: Extend bridge.py for op-mode

[sever-sever]

Change Summary

Extend bridge.py op-mode script, allow next commands to use own
op-mode functions
Add:

show bridge vlan
show bridge brX fdb
show bridge brX mdb

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://phabricator.vyos.net/T4569

Component(s) name

bridge

Proposed changes

How to test

Current output:

vyos@r14:~$ show bridge vlan
port              vlan-id  
eth1              1 PVID Egress Untagged
br0               1 PVID Egress Untagged
vyos@r14:~$ 
vyos@r14:~$ show bridge br0 fdb
52:54:00:38:cc:4f dev eth1 master br0 
52:54:00:c7:31:bc dev eth1 vlan 1 master br0 permanent
52:54:00:c7:31:bc dev eth1 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent
33:33:00:00:00:02 dev eth1 self permanent
01:00:5e:00:00:01 dev eth1 self permanent
33:33:00:00:00:01 dev br0 self permanent
33:33:00:00:00:02 dev br0 self permanent
33:33:ff:00:00:01 dev br0 self permanent
33:33:ff:c7:31:bc dev br0 self permanent
01:00:5e:00:00:01 dev br0 self permanent
33:33:ff:00:00:00 dev br0 self permanent
33:33:00:00:00:05 dev br0 self permanent
33:33:00:00:00:06 dev br0 self permanent
vyos@r14:~$ 

New output:

vyos@r14:~$ show bridge vlan 
Interface      Vlan  Flags
-----------  ------  ---------------------
eth1              1  pvid, egress untagged
br0               1  pvid, egress untagged
vyos@r14:~$ 

vyos@r14:~$ show bridge br0 fdb 
Interface    Mac address        State      Flags
-----------  -----------------  ---------  -------
eth1         52:54:00:38:cc:4f
eth1         52:54:00:c7:31:bc  permanent
eth1         52:54:00:c7:31:bc  permanent
eth1         33:33:00:00:00:01  permanent  self
eth1         33:33:00:00:00:02  permanent  self
eth1         01:00:5e:00:00:01  permanent  self
br0          33:33:00:00:00:01  permanent  self
br0          33:33:00:00:00:02  permanent  self
br0          33:33:ff:00:00:01  permanent  self
br0          33:33:ff:c7:31:bc  permanent  self
br0          01:00:5e:00:00:01  permanent  self
br0          33:33:ff:00:00:00  permanent  self
br0          33:33:00:00:00:05  permanent  self
br0          33:33:00:00:00:06  permanent  self
vyos@r14:~$ 

Raw format:

vyos@r14:~$ /usr/libexec/vyos/op_mode/bridge.py show_vlan --raw
[
    {
        "ifname": "eth1",
        "vlans": [
            {
                "vlan": 1,
                "flags": [
                    "PVID",
                    "Egress Untagged"
                ]
            }
        ]
    },
    {
        "ifname": "br0",
        "vlans": [
            {
                "vlan": 1,
                "flags": [
                    "PVID",
                    "Egress Untagged"
                ]
            }
        ]
    }
]
vyos@r14:~$ 

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly