Add heat logs to logstash.

Change-Id: I7ba628bb5d7f160f67327310048973483b78b05a
Reviewed-on: https://review.openstack.org/34156
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Better elasticsearch proxy settings.

* modules/logstash/templates/kibana.vhost.erb: Set proxy timeouts and
allow /_status and /_search.

Change-Id: I67f6152bcda5999a27fef07c8428ac12d3a0201c
Reviewed-on: https://review.openstack.org/34252
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins