Update tracing feature example to use WildFly 28.

add different profiles for wildfly 27

Author: liweinan

tracing-example/README.adoc

@@ -7,15 +7,13 @@ To run the example, you can simply run it with WildFly:
 [source,bash]
 ----
 $ mvn wildfly:run
-
 ----
 
 After server started, we can access the server and get the tracing info:
 
 [source,bash]
 ----
 $ curl -i http://localhost:8080/tracing-example/level
-
 ----
 
 And here is the sample output:

tracing-example/pom.xml

@@ -37,17 +37,26 @@
         <version.org.jboss.resteasy>6.2.3.Final</version.org.jboss.resteasy>
         <version.org.jboss.resteasy.extensions>2.0.0.Final</version.org.jboss.resteasy.extensions>
         <version.org.junit>5.9.2</version.org.junit>
-        <version.org.wildfly>27.0.1.Final</version.org.wildfly>
         <version.org.wildfly.arquillian>5.0.0.Alpha6</version.org.wildfly.arquillian>
-
         <version.wildfly-maven-plugin>4.1.0.Beta5</version.wildfly-maven-plugin>
-
+        <version.org.wildfly>28.0.0.Beta1</version.org.wildfly>
+        <dep.tracing.scope>provided</dep.tracing.scope>
         <!-- Test properties -->
         <jboss.home>${project.build.directory}${file.separator}wildfly</jboss.home>
         <debug.port>8787</debug.port>
         <debugJvmArgs/>
     </properties>
 
+    <profiles>
+        <profile>
+            <id>wildfly27</id>
+            <properties>
+                <version.org.wildfly>27.0.1.Final</version.org.wildfly>
+                <dep.tracing.scope>compile</dep.tracing.scope>
+            </properties>
+        </profile>
+    </profiles>
+
     <dependencyManagement>
         <dependencies>
             <dependency>
@@ -111,8 +120,8 @@
             <groupId>org.jboss.resteasy</groupId>
             <artifactId>resteasy-tracing-api</artifactId>
             <version>${version.org.jboss.resteasy.extensions}</version>
+            <scope>${dep.tracing.scope}</scope>
         </dependency>
-
         <!-- Test Dependencies -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>