Doc:Add deprecation notice for azure module

docs/static/azure-module.asciidoc

@@ -3,6 +3,12 @@
 === Azure Module 
 experimental[]
 
+++++
+<titleabbrev>Azure Module (deprecated)</titleabbrev>
+++++
+
+deprecated[7.8.0, "We recommend using the Azure modules in {filebeat-ref}/filebeat-module-azure.html[{Filebeat}] and {metricbeat-ref}/metricbeat-module-azure.html[{metricbeat}], which are compliant with the {ecs-ref}/index.html[Elastic Common Schema (ECS)]"]
+
 The https://azure.microsoft.com/en-us/overview/what-is-azure/[Microsoft Azure]
 module in Logstash helps you easily integrate your Azure activity logs and SQL
 diagnostic logs with the Elastic Stack. 
@@ -19,12 +25,6 @@ and decreasing overall time to resolution. The Azure module helps you:
 * Perform root-cause analysis by investigating user activity
 * Monitor and optimize your SQL DB deployments.
 
-NOTE: The Logstash Azure module is an
-https://www.elastic.co/products/x-pack[{xpack}] feature under the Basic License
-and is therefore free to use. Please contact
-mailto:monitor-azure@elastic.co[monitor-azure@elastic.co] for questions or more
-information.
-
 The Azure module uses the
 {logstash-ref}/plugins-inputs-azure_event_hubs.html[Logstash Azure Event Hubs
 input plugin] to consume data from Azure Event Hubs. The module taps directly into the

docs/static/modules.asciidoc

@@ -9,7 +9,7 @@ These modules are available:
 * <<connecting-to-cloud,Elastic Cloud>>
 * <<arcsight-module>>
 * <<netflow-module,Netflow Module (deprecated)>>
-* <<azure-module, Microsoft Azure Module>>
+* <<azure-module, Microsoft Azure Module (deprecated)>>
 
 Each module comes pre-packaged with Logstash configurations, Kibana dashboards,
 and other meta files that make it easier for you to set up the Elastic Stack for