apt: Don't install recommended packages.

Signed-off-by: Maximilian Wilhelm <max@rfc2324.org>

apt/ffho.apt.conf

@@ -0,0 +1 @@
+APT::Install-Recommends "false";

apt/init.sls

@@ -70,3 +70,8 @@ apt-icinga2:
 /etc/apt/preferences.d/ffho:
   file.managed:
     - source: salt://apt/ffho.preferences
+
+
+/etc/apt/apt.conf.d/ffho:
+  file.managed:
+    - source: salt://apt/ffho.apt.conf