Add basic elastic-recheck docs page

Add page to our CI documenation about the elastic-recheck project
so people can find the full docs and configuration details.

Change-Id: I846d811e5b154c0e555d3458bc74920baf0be971

doc/source/elastic-recheck.rst

@@ -0,0 +1,33 @@
+:title: Elastic-Recheck
+
+.. _elastic-recheck:
+
+Elastic-Recheck
+######
+
+
+
+At a Glance
+===========
+
+:Hosts:
+  * http://status.openstack.org
+:Puppet:
+  * :file:`modules/elastic_recheck`
+  * :file:`modules/openstack_project/manifests/status.pp`
+:Projects:
+ * https://git.openstack.org/cgit/openstack-infra/elastic-recheck
+:Bugs:
+  * http://bugs.launchpad.net/openstack-ci
+:Resources:
+  * `elastic-recheck Documentation <http://docs.openstack.org/infra/elastic-recheck/>`_
+
+Overview
+========
+
+The elastic-recheck project leverages Elasticsearch and Logstash to identify,
+track and report upon rechecks in the OpenStack gate.
+
+Dashboard can be found here:
+
+http://status.openstack.org/elastic-recheck/

doc/source/systems.rst

@@ -12,6 +12,7 @@ Major Systems
    zuul
    jjb
    logstash
+   elastic-recheck
    devstack-gate
    nodepool
    jeepyb