workdir logdir etcdir in deb package

The ini files in the deb package set following values 
```
workdir=/usr/local/var/run/alignak
logdir=/usr/local/var/log/alignak
etcdir=/usr/local/etc/alignak

```
It should be 
```
workdir=/var/run/alignak
logdir=/var/log/alignak
etcdir=/etc/alignak

```