Add a byte unit to byte count metrics (#8121)
Add a byte unit to byte count metrics (#8121)

* Add a byte unit to byte count metrics

Currently several byte count metrics do not have their unit type set to `byte`, this leads to incorrect displays on the frontend. This PR fixes that.

* Lint the CSV file

Double quotes are not allowed in a CSV field, other than for double quoting an entire field.

Before:

```
➜  integrations-core git:(simon/add-units-to-integration) csvlint haproxy/metadata.csv
Record #101 has error: bare " in non-quoted-field
```

After:

```
unable to parse any further
➜  integrations-core git:(simon/add-units-to-integration) ✗ csvlint haproxy/metadata.csv
file is valid
```
DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core,DataDog/integrations-core