lookup tables file lookup adding characters/no clean parse

## Expected Behavior
Characters at the end of lines should be ignored.

## Current Behavior
Spaces or Tabs are added to the values.


## Possible Solution
The Data Parser should parse/read only the data inside the quote characters.

## Steps to Reproduce (for bugs)
```
root@gm-01-u:~# cat -A /etc/graylog/host-table.csv
"ip","hostname"$
"192.168.1.50","gm-01-c.lan" $
"192.168.1.51","gm-01-d.lan"$
"192.168.1.52","gm-01-u.lan"$
```

## Context
Most CSV will be created by exporting Excel files, but some might be created manual and additional spaces might be added at the end of a line or after a separator. Spotting this becomes hard if the file is bigger.

## Your Environment

* Graylog Version: 2.3.0 rc.1