Merge pull request #4 from ICTO/update-logstash-version

Added version and updated baseurl, modified shipper class
Added Oracle Linux to list of supported $operatingsystem
Added /etc/logstash/grok.d for 3rd party patters
Fixed typo in indexer-output.conf.erb fragment, disabled debug output
disabled debug output in templates/shipper-output-amqp.conf.erb
Correctly retriev the redis server for a shipper, disable debug output
Merge branch 'master' of https://github.com/simonmcc/puppet-logstash
Added apache combined & error log handling (this should really be done outside of
this class or via hooks)
Updated docs to include embedded elasticsearch provider
Support customized configurations and fix issue with redis-versions on Debian
adjust shipper to support puppet-concat (https://github.com/ripienaar/puppet-concat)
add defines for shared config, extend shipper and fix issue in redis-output template
move shipper config to strategy
make define runable without shareconfig class
Notify shipper-service if config file has changed
adjust docu and move output-conf in templates
fix bug in template (access to logfiles parameters contains typo)
add documentation about the shipper strategy
fix wrong markup for code
fix typos