Adds generate_api_zookeeper_ips function

Change-Id: I5c0c7e6e40b6beee07b7615e4a7584ee5a66225b

lib/puppet/parser/functions/generate_api_zookeeper_ips.rb

@@ -0,0 +1,26 @@
+#    Copyright 2016 Midokura SARL, 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.
+module Puppet::Parser::Functions
+  newfunction(:generate_api_zookeeper_ips, :type => :rvalue, :doc => <<-EOS
+    This function returns Zookeper configuration hash
+    EOS
+  ) do |argv|
+    result = []
+    nodes_hash = argv[0]
+    nodes_hash.each do |zk_ip|
+      result.push({'ip' => zk_ip})
+    end
+    return result
+  end
+end