implement structured logging

system/lib.py

@@ -145,6 +145,8 @@ class BaseTest(object):
         "ppaDistributorID": "ubuntu",
         "ppaCodename": "",
         "enableMetricsEndpoint": True,
+        "logLevel": "debug",
+        "logFormat": "default"
     }
     configOverride = {}
     environmentOverride = {}

system/t02_config/ConfigShowTest_gold

@@ -25,5 +25,7 @@
     "SwiftPublishEndpoints": {},
     "AzurePublishEndpoints": {},
     "AsyncAPI": false,
-    "enableMetricsEndpoint": true
+    "enableMetricsEndpoint": true,
+    "logLevel": "debug",
+    "logFormat": "default"
 }

system/t02_config/CreateConfigTest_gold

@@ -25,5 +25,7 @@
   "SwiftPublishEndpoints": {},
   "AzurePublishEndpoints": {},
   "AsyncAPI": false,
-  "enableMetricsEndpoint": false
+  "enableMetricsEndpoint": false,
+  "logLevel": "debug",
+  "logFormat": "default"
 }