fix(debian): align Debian log directory with apparmor profile

Debian ships with an apparmor profile that specifies /var/log/named as
the permissible log directory.

Author: tedski

bind/map.jinja

@@ -15,7 +15,7 @@
         'named_directory': '/var/cache/bind',
         'zones_directory': '/var/cache/bind/zones',
         'chroot_dir': '',
-        'log_dir': '/var/log/bind9',
+        'log_dir': '/var/log/named',
         'log_mode': '644',
         'user': 'bind',
         'group': 'bind',

test/integration/default/controls/config_spec.rb

@@ -11,7 +11,7 @@
 named_directory = '/var/cache/bind'
 zones_directory = '/var/cache/bind/zones'
 keys_directory  = '/etc/bind/keys'
-log_directory   = '/var/log/bind9'
+log_directory   = '/var/log/named'
 keys_mode       = '02755'
 conf_mode       = '0644'
 config          = '/etc/bind/named.conf'