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

Author: dhoard

pom.xml

@@ -38,11 +38,11 @@
     <connection>scm:git:git@github.com:prometheus/cloudwatch_exporter.git</connection>
     <developerConnection>scm:git:git@github.com:prometheus/cloudwatch_exporter.git</developerConnection>
     <url>git@github.com:prometheus/cloudwatch_exporter.git</url>
-    <tag>v0.18.0</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <properties>
-    <revision>0.18.0</revision>
+    <revision>0.18.1-SNAPSHOT</revision>
     <!-- Build settings -->
     <maven.build.timestamp.format>yyyy-MM-dd</maven.build.timestamp.format>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>