switch to using a revision prefix

Author: aaronwalker

pom.xml

@@ -10,10 +10,11 @@
     </parent>
 
     <artifactId>pipeline-github</artifactId>
-    <version>${changelist}</version>
+    <version>${revision}-${changelist}</version>
     <packaging>hpi</packaging>
 
     <properties>
+        <revision>2.8</revision>
         <changelist>999999-SNAPSHOT</changelist>
         <jenkins.version>2.164.3</jenkins.version>
         <java.level>8</java.level>