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

Author: froque

pom.xml

@@ -7,7 +7,7 @@
   </parent>
 
   <artifactId>powershell</artifactId>
-  <version>1.8</version>
+  <version>1.9-SNAPSHOT</version>
   <packaging>hpi</packaging>
 
   <name>Jenkins PowerShell plugin</name>
@@ -35,7 +35,7 @@
     <connection>scm:git:git://github.com/jenkinsci/${project.artifactId}-plugin.git</connection>
     <developerConnection>scm:git:[email protected]:jenkinsci/${project.artifactId}-plugin.git</developerConnection>
     <url>http://github.com/jenkinsci/${project.artifactId}-plugin</url>
-    <tag>powershell-1.8</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <properties>