[maven-release-plugin] prepare for next development iteration

pom.xml

@@ -34,7 +34,7 @@ THE SOFTWARE.
 
   <groupId>org.jenkins-ci.main</groupId>
   <artifactId>jenkins-test-harness</artifactId>
-  <version>2.53</version>
+  <version>${revision}${changelist}</version>
 
   <name>Test harness for Jenkins and plugins</name>
   <description>Harness used to run functional tests of Jenkins core and plugins.</description>
@@ -43,11 +43,11 @@ THE SOFTWARE.
     <connection>scm:git:git://github.com/jenkinsci/${project.artifactId}.git</connection>
     <developerConnection>scm:git:ssh://[email protected]/jenkinsci/${project.artifactId}.git</developerConnection>
     <url>https://github.com/jenkinsci/${project.artifactId}</url>
-    <tag>jenkins-test-harness-2.53</tag>
+    <tag>${scmTag}</tag>
   </scm>
 
   <properties>
-    <revision>2.53</revision>
+    <revision>2.54</revision>
     <changelist>-SNAPSHOT</changelist>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <jetty.version>9.4.5.v20170502</jetty.version>