Include 'degraded' status in elastic agent unhealthy agent rule (#15773)

* Include 'degraded' status in elastic agent unhealthy agent rule

Author: MichelLosier

packages/elastic_agent/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "2.6.6"
+  changes:
+    - description: Fixes Unhealthy Elastic Agent alert rule to include degraded status
+      type: bugfix
+      link: https://github.com/elastic/integrations/pull/15773
 - version: "2.6.5"
   changes:
     - description: >-

packages/elastic_agent/kibana/alerting_rule_template/elastic-agent-unhealthy-status.json

@@ -16,7 +16,7 @@
       "thresholdComparator": ">",
       "size": 100,
       "esqlQuery": {
-        "esql": "FROM logs-elastic_agent.status_change-default, *:logs-elastic_agent.status_change-default\n| WHERE data_stream.dataset == \"elastic_agent.status_change\" and agentless == false and status == \"error\""
+        "esql": "FROM logs-elastic_agent.status_change-default, *:logs-elastic_agent.status_change-default\n| WHERE data_stream.dataset == \"elastic_agent.status_change\" and agentless == false and status in (\"error\", \"degraded\")"
       },
       "aggType": "count",
       "groupBy": "row",

packages/elastic_agent/manifest.yml

@@ -1,6 +1,6 @@
 name: elastic_agent
 title: Elastic Agent
-version: 2.6.5
+version: 2.6.6
 description: Collect logs and metrics from Elastic Agents.
 type: integration
 format_version: 3.5.0