Upgrade elasticsearch to version 0.90.3.

* modules/openstack_project/manifests/elasticsearch.pp: Upgrade
elasticsearch to 0.90.3 to support logstash 1.2.1. This version is
required to use the elasticsearch output in logstash 1.2.1.

* modules/elasticsearch/files/elasticsearch.mapping.json: Add setting
for new "message" field in logstash 1.2.1's new schema.

Change-Id: Ice1a8613ea11aeb954c600752a2de745dd56ef4b
Upgrade Logstash to 1.2.1.

* modules/logstash/manifests/init.pp: Download and install Logstash
1.2.1.

* modules/openstack_project/files/logstash/log-gearman-client.py:
Logstash 1.2.1 comes with a new schema. Update the job data sent to log
push workers to better accomodate the new schema.

* modules/openstack_project/files/logstash/log-gearman-worker.py: Push
Logstash 1.2.1 schema compliant JSON to the Logstash TCP input.

* modules/openstack_project/templates/logstash/indexer.conf.erb:
Logstash 1.2.1 comes with a new schema and many input and filter
changes. Use the newly supported features like conditionals to keep the
config up to date.

* modules/kibana/templates/config.rb.erb: Change the default field for
kibana to 'message'. It was @message which is deprecated in the new
logstash schema.

Change-Id: Id19fc05bcce8d42c5c0cf33df3da7e95f5794107
Merge "Upgrade elasticsearch to version 0.90.3."
Merge "Upgrade Logstash to 1.2.1."