Add missing logging.pattern meta-data

See gh-3405

spring-boot/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -41,6 +41,18 @@
     "description": "Log levels severity mapping. Use 'root' for the root logger.",
     "sourceType": "org.springframework.boot.logging.LoggingApplicationListener"
   },
+  {
+    "name": "logging.pattern.console",
+    "type": "java.lang.String",
+    "description": "Appender pattern for output to the console. Only supported with the default logback setup.",
+    "sourceType": "org.springframework.boot.logging.LoggingApplicationListener"
+  },
+  {
+    "name": "logging.pattern.file",
+    "type": "java.lang.String",
+    "description": "Appender pattern for output to the file. Only supported with the default logback setup.",
+    "sourceType": "org.springframework.boot.logging.LoggingApplicationListener"
+  },
   {
     "name": "logging.path",
     "type": "java.lang.String",