feat(core): Add DefaultConfiguratorFactory for JBoss Log Manager 3.x.

Change-Id: I6bf88c9e6c8c4aba303cc1d18e8f18c917dd6b88
diff --git a/examples/spring-boot/pom.xml b/examples/spring-boot/pom.xml
index 2940c66..8cb994a 100644
--- a/examples/spring-boot/pom.xml
+++ b/examples/spring-boot/pom.xml
@@ -42,7 +42,7 @@
     <dependency>
       <groupId>org.jboss.slf4j</groupId>
       <artifactId>slf4j-jboss-logmanager</artifactId>
-      <version>1.1.0.Final</version>
+      <version>2.0.1.Final</version>
     </dependency>
     <!-- *** optional ***
     <dependency>
@@ -97,6 +97,11 @@
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-maven-plugin</artifactId>
         <version>${spring-boot.version}</version>
+        <configuration>
+          <systemPropertyVariables>
+            <java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
+          </systemPropertyVariables>
+        </configuration>
       </plugin>
     </plugins>
   </build>
diff --git a/examples/spring-boot/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RootResource.java b/examples/spring-boot/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RootResource.java
index a2b824a..77c1f84 100644
--- a/examples/spring-boot/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RootResource.java
+++ b/examples/spring-boot/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RootResource.java
@@ -10,9 +10,11 @@
 import org.jboss.logging.Logger;
 import org.jboss.logging.MDC;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
-@RestController("/")
+@RestController
+@RequestMapping("/")
 public class RootResource {
 
   static final Logger log = Logger.getLogger(RootResource.class);
diff --git a/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.ConfiguratorFactory b/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.ConfiguratorFactory
new file mode 100644
index 0000000..c4b4beb
--- /dev/null
+++ b/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.ConfiguratorFactory
@@ -0,0 +1,6 @@
+# SPDX-FileCopyrightText: © 2023 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# For JBoss Log Manager 3.x (or JBoss Log Manager Embedded 1.2 or later)
+eu.mulk.quarkus.googlecloud.jsonlogging.logmanager.DefaultConfiguratorFactory
diff --git a/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.EmbeddedConfigurator b/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.EmbeddedConfigurator
index 6d937e5..b9ffbe2 100644
--- a/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.EmbeddedConfigurator
+++ b/examples/spring-boot/src/main/resources/META-INF/services/org.jboss.logmanager.EmbeddedConfigurator
@@ -1 +1,6 @@
+# SPDX-FileCopyrightText: © 2023 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# For JBoss Log Manager Embedded 1.1.x and earlier.
 eu.mulk.quarkus.googlecloud.jsonlogging.logmanager.DefaultEmbeddedConfigurator
diff --git a/examples/spring-boot/src/main/resources/logging.properties b/examples/spring-boot/src/main/resources/logging.properties
index 31aebd7..8bc0033 100644
--- a/examples/spring-boot/src/main/resources/logging.properties
+++ b/examples/spring-boot/src/main/resources/logging.properties
@@ -2,5 +2,11 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-handlers = eu.mulk.quarkus.googlecloud.jsonlogging.logmanager.DefaultConsoleHandler
-.level = INFO
+# java.util.logging properties
+#handlers = eu.mulk.quarkus.googlecloud.jsonlogging.logmanager.DefaultConsoleHandler
+#.level = INFO
+
+# JBoss Log Manager properties
+logger.level = INFO
+logger.handlers = GOOGLEJSON
+handler.GOOGLEJSON = eu.mulk.quarkus.googlecloud.jsonlogging.logmanager.DefaultConsoleHandler