Set back scm.tag to HEAD (otherwise maven keep adding its value)

Author: artem-v

pom.xml

@@ -33,7 +33,7 @@
     <connection>scm:git:https://github.com/scalecube/scalecube-parent.git</connection>
     <developerConnection>scm:git:https://github.com/scalecube/scalecube-parent.git
     </developerConnection>
-    <tag>v0.2.13</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <prerequisites>