Allow configuration of logstash url

Elastic recheck commands pull the logstash url
from the provided configuration file. Allow this
url to be set.

Change-Id: I5fd2bc05f1cd6647fa43aaa307c47935c64b5f36
Depends-on: I282745796a40f10955e0c9893e817779b2d4d55a

manifests/bot.pp

@@ -25,6 +25,7 @@ class elastic_recheck::bot (
   $recheck_bot_passwd,
   $recheck_bot_nick,
   $elastic_search_url = 'http://logstash.openstack.org:80/elasticsearch',
+  $logstash_url = 'http://logstash.openstack.org',
   $subunit2sql_db_uri = 'mysql+pymysql://query:query@logstash.openstack.org/subunit2sql',
   $daemon_args = undef,
 ) {

templates/elastic-recheck.conf.erb

@@ -15,4 +15,5 @@ key=/home/recheck/.ssh/id_rsa
 
 [data_source]
 es_url=<%= @elastic_search_url %>
+ls_url=<%= @logstash_url %>
 db_uri=<%= @subunit2sql_db_uri %>