Spacing cleanups of the config file templates

Fix unbalanced quote

2 typos

Default permission issues

* Manage attr_filter module's default config files so we can set permissions
* Manage the `hints` file so we can set permissions

Fix huntgroups when there is more than one condition

Where there is more than one condition, then multiple huntgroup lines
should be created

Huntgroup

Fix query_file path

$custom_query_file is initialized as undef, so this check implied
custom_query_file was always used.

The concat resource for huntgroups is already defined at init.pp

There is a duplicate with freeradius::huntgroup

Latest versions of concat module removed this parameter.

Fix unbalanced brackets in the eap module

Debian 9 ( Stretch ) support

Add puppet class for huntgroups

This reverts commit e4bc7ec1.

Simply enabling the eap module like so:
```
    freeradius::module::eap { 'eap':
        ensure => 'present',
    }
```
results in a broken configuration:
```
...
including configuration file /etc/raddb/mods-enabled/eap
/etc/raddb/mods-enabled/eap[604]: Too many closing braces
Errors reading or parsing /etc/raddb/radiusd.conf
```

Move the opening `gtc {` outside the block that is conditional on the
definition of `@gtc_challenge`