Updates to HA section to match reality (#145)

* Updates to HA section to match reality

* Update doc-Service-Telemetry-Framework/modules/con_high-availability.adoc

Co-authored-by: Leif Madsen <lmadsen@redhat.com>

Co-authored-by: JoanneOFlynn2018 <45287002+JoanneOFlynn2018@users.noreply.github.com>
Co-authored-by: Leif Madsen <lmadsen@redhat.com>

Author: 3 people

doc-Service-Telemetry-Framework/modules/con_high-availability.adoc

@@ -31,6 +31,14 @@ High availability is the ability of {Project} ({ProjectShort}) to rapidly recove
 
 Enabling high availability has the following effects:
 
-- Two {MessageBus} pods run instead of the default 1.
-- Three ElasticSearch pods run instead of the default 1.
-- Recovery time from a lost pod in either of these services reduces to approximately 2 seconds.
+* Three ElasticSearch pods run instead of the default one.
+* The following components run two pods instead of the default one:
+** {MessageBus}
+** Alertmanager
+** Prometheus
+** Events Smart Gateway
+** Collectd Metrics Smart Gateway
+* Recovery time from a lost pod in any of these services reduces to approximately 2 seconds.
+
+[NOTE]
+The Ceilometer Metrics Smart Gateway is not yet HA