tree 085b9b51ecb25d325ec097930074f12894f31476
parent c8cda5aeabf2abcb520e77d07c173609fba9026c
author William A. Kennington III <wak@google.com> 1635024908 -0700
committer William A. Kennington III <wak@google.com> 1635155382 -0700

routing_table: Use common netlink parser

This reduces the LOC and redundant netlink parsing logic that is
untested.

It also happens to fix an issue with the current parsing breaking with
some of the routes returned by the kernel
```
[19259.086333] phosphor-network-manager[400]: Refreshing the objects.
[19259.094507] phosphor-network-manager[400]: Error validating header
[19259.095419] phosphor-network-manager[400]: The operation failed internally.
[19259.124862] phosphor-network-manager[400]: Error validating header
[19259.125593] phosphor-network-manager[400]: The operation failed internally.
[19259.143722] phosphor-network-manager[400]: Error validating header
[19259.144569] phosphor-network-manager[400]: The operation failed internally.
[19259.165901] phosphor-network-manager[400]: Error validating header
[19259.169497] phosphor-network-manager[400]: The operation failed internally.
[19259.204178] phosphor-network-manager[400]: Error validating header
[19259.204838] phosphor-network-manager[400]: The operation failed internally.
[19259.223547] phosphor-network-manager[400]: Error validating header
[19259.224302] phosphor-network-manager[400]: The operation failed internally.
[19259.604162] phosphor-network-manager[400]: Error validating header
[19259.605017] phosphor-network-manager[400]: The operation failed internally.
[19259.623701] phosphor-network-manager[400]: Refreshing complete.
```

Change-Id: I00772361090430ff79a5dd1dcf6cc6077f3f55f1
Signed-off-by: William A. Kennington III <wak@google.com>