Fixes for debian control template

Puts the `Replace:` and `Conflicts:` lines in the correct place
Without these two lines the variables are not replaced correctly in the `control` file template. I used the following command to debug:

```
/home/vagrant/basho/riak_ee/rebar --force --verbose 3 create template_dir=../deps/node_package/priv/templates template_vars=../pkg.vars.config template=deb 2>&1 | tee /tmp/rebar.out
```