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

pom.xml

@@ -35,7 +35,7 @@ THE SOFTWARE.
     </parent>
 
     <artifactId>ec2</artifactId>
-    <version>1.50.1</version>
+    <version>${revision}${changelist}</version>
     <packaging>hpi</packaging>
 
     <name>Amazon EC2 plugin</name>
@@ -77,7 +77,7 @@ THE SOFTWARE.
         <connection>scm:git:git://github.com/jenkinsci/ec2-plugin.git</connection>
         <developerConnection>scm:git:[email protected]:jenkinsci/ec2-plugin.git</developerConnection>
         <url>https://github.com/jenkinsci/ec2-plugin</url>
-        <tag>ec2-1.50.1</tag>
+        <tag>${scmTag}</tag>
     </scm>
 
     <properties>