**Summary**
VPP add op-mode commands to show bonding interfaces/statistics/members/details
Currently, we have op-mode only for `LACP/802.3ad`
```
set interfaces vpp bonding vppbond2 member interface 'eth1'
set vpp settings interface eth1
set vpp settings poll-sleep-usec '2222'
vyos@r14# run show vpp lacp
actor state partner state
interface name sw_if_index bond interface exp/def/dis/col/syn/agg/tim/act exp/def/dis/col/syn/agg/tim/act
eth1 1 BondEthernet2 0 1 0 0 0 1 1 1 0 0 0 0 0 0 0 0
LAG ID: [(ffff,52-54-00-f4-d5-cd,0003,00ff,0001), (ffff,00-00-00-00-00-00,0003,00ff,0001)]
RX-state: DEFAULTED, TX-state: TRANSMIT, MUX-state: DETACHED, PTX-state: PERIODIC_TX
[edit]
vyos@r14#
vyos@r14# set interfaces vpp bonding vppbond2 mode active-backup
[edit]
vyos@r14# commit
vyos@r14# run show vpp lacp
actor state partner state
interface name sw_if_index bond interface exp/def/dis/col/syn/agg/tim/act exp/def/dis/col/syn/agg/tim/act
[edit]
vyos@r14#
```
Proposed CLI:
```
set interfaces vpp bonding
set interfaces vpp bonding detail
```
Some VPP commands:
```
vyos@r14# sudo vppctl show bond
interface name sw_if_index mode load balance active members members
BondEthernet2 3 active-backup active-backup 1 1
[edit]
vyos@r14#
vyos@r14# sudo vppctl show bond details
BondEthernet2
mode: active-backup
load balance: active-backup
number of active members: 1
eth1
weight: 0, is_local_numa: 1, sw_if_index: 1
number of members: 1
eth1
device instance: 0
interface id: 2
sw_if_index: 3
hw_if_index: 3
[edit]
vyos@r14#
```