Fixes scm.tag for incrementals (#462)

Author: alecharp

pom.xml

@@ -30,7 +30,7 @@
   <scm>
     <connection>scm:git:https://github.com/${gitHubRepo}.git</connection>
     <developerConnection>scm:git:git@github.com:${gitHubRepo}.git</developerConnection>
-    <tag>winstone-8.13.1</tag>
+    <tag>${scmTag}</tag>
     <url>https://github.com/${gitHubRepo}</url>
   </scm>