zuul: added pinned log INFO level for "zuul.GerritConnection.ssh" logger as too verbose in DEBUG level

Change-Id: Idd1b140b23887547d4e1c70f26192c339df75737

Author: morucci

controllers/static/zuul/logging.yaml.tmpl

@@ -22,6 +22,14 @@ handlers:
     env_prefix: K8S_
 {{ end }}
 loggers:
+  zuul.GerritConnection.ssh:
+    handlers:
+      - console
+{{- if .ForwardLogs }}
+      - logforward
+{{ end }}
+    level: INFO
+    propagate: 0
   zuul.GerritConnection.io:
     handlers:
       - console

doc/reference/CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 ### Added
 
 - zuul: support of the SMTP connection
+- zuul: added pinned log INFO level for "zuul.GerritConnection.ssh" logger as too verbose in DEBUG level
 
 ### Changed
 ### Deprecated