Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/postfix/recipes/maps.rb

@@ -0,0 +1,47 @@
+# encoding: utf-8
+# Copyright:: 2012-2017, Chef Software, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+node['postfix']['maps'].each do |type, maps|
+  if node['platform_family'] == 'debian'
+    package "postfix-#{type}" if %w(pgsql mysql ldap cdb).include?(type)
+  end
+
+  separator = if %w(pgsql mysql ldap memcache sqlite).include?(type)
+                ' = '
+              else
+                ' '
+              end
+  maps.each do |file, content|
+    execute "update-postmap-#{file}" do
+      command "postmap #{file}"
+      environment PATH: "#{ENV['PATH']}:/opt/omni/bin:/opt/omni/sbin" if platform_family?('omnios')
+      action :nothing
+    end if %w(btree cdb dbm hash sdbm).include?(type)
+    template "#{file}-#{type}" do
+      path file
+      source 'maps.erb'
+      only_if "postconf -m | grep -q #{type}"
+      variables(
+        map: content,
+        separator: separator
+      )
+      if %w(btree cdb dbm hash sdbm).include?(type)
+        notifies :run, "execute[update-postmap-#{file}]"
+      end
+      notifies :restart, 'service[postfix]'
+    end
+  end
+end