backlog/107

Implements the issue https://github.com/telefonicaid/fiware-connectors/issues/107
Instead of having the `, do not change in each parameter maybe we can put all them in a section like this:

```
## WARNING -- NOT EDITABLE ZONE -- PLEASE, DON'T CHANGE ANY OF THE FOLLOWING
## CONFIGURATION PARAMETERS INSTEAD OF YOU ARE VERY SURE WHAT ARE YOU DOING
## (all the stuff not changeable)
## END OF NOT EDITABLE SECTION
```
I have seen this apporach in some other .conf file for other software... maybe it also makes sense using it here.