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

pom.xml

@@ -8,7 +8,7 @@
         <relativePath />
     </parent>
     <artifactId>docker-workflow</artifactId>
-    <version>1.21</version>
+    <version>${revision}${changelist}</version>
     <name>Docker Pipeline</name>
     <description>Build and use Docker containers from pipelines</description>
     <packaging>hpi</packaging>
@@ -25,11 +25,11 @@
       <connection>scm:git:git://github.com/jenkinsci/${project.artifactId}-plugin.git</connection>
       <developerConnection>scm:git:[email protected]:jenkinsci/${project.artifactId}-plugin.git</developerConnection>
       <url>https://github.com/jenkinsci/${project.artifactId}-plugin</url>
-      <tag>docker-workflow-1.21</tag>
+      <tag>${scmTag}</tag>
     </scm>
 
     <properties>
-        <revision>1.21</revision>
+        <revision>1.22</revision>
         <changelist>-SNAPSHOT</changelist>
         <jenkins.version>2.60.3</jenkins.version>
         <java.level>8</java.level>