Support custom lines in /etc/resolv.conf

Fixes #41

manifests/init.pp

@@ -22,6 +22,9 @@
 # @param sortlist
 #   Optional array of sortlist entries
 #
+# @param custom_lines
+#  Array of lines that will be added to the end of /etc/resolv.conf
+#
 # @param resolver_config_file
 #   Path to resolv.conf
 #
@@ -47,6 +50,7 @@
   Optional[Array[String[1]]] $search = undef,
   Optional[Stdlib::Fqdn] $domain = undef,
   Optional[Array[String[1]]] $sortlist = undef,
+  Array[String[1]] $custom_lines = [],
   Stdlib::Absolutepath $resolver_config_file = '/etc/resolv.conf',
   String[1] $resolver_config_file_ensure = 'file',
   String[1] $resolver_config_file_owner = 'root',

spec/classes/init_spec.rb

@@ -433,6 +433,26 @@
     }
   end
 
+  context 'with custom_lines defined' do
+    let :params do
+      { custom_lines: ['foo', 'bar'] }
+    end
+
+    content = <<-END.gsub(%r{^\s+\|}, '')
+      |# This file is being maintained by Puppet.
+      |# DO NOT EDIT
+      |options rotate timeout:1
+      |nameserver 8.8.8.8
+      |nameserver 8.8.4.4
+      |foo
+      |bar
+    END
+
+    it {
+      is_expected.to contain_file('dnsclient_resolver_config_file').with_content(content)
+    }
+  end
+
   context 'with parameter resolver_config_file_ensure not set to \'file\' \'present\' or \'absent\'' do
     let :params do
       { resolver_config_file_ensure: 'invalid' }

templates/resolv.conf.erb

@@ -15,3 +15,6 @@ options<% @options.each do |option| %> <%= option %><% end %>
 <% @nameservers_slice.each do |nameserver| -%>
 nameserver <%= nameserver %>
 <% end -%>
+<% @custom_lines.each do |custom_line| -%>
+<%= custom_line %>
+<% end -%>