use unique versions for snapshots

git-svn-id: https://svn.apache.org/repos/asf/struts/maven/trunk/pom@473132 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index e47afda..5591adb 100755
--- a/pom.xml
+++ b/pom.xml
@@ -343,7 +343,7 @@
          <url>scp://people.apache.org/www/people.apache.org/repo/m2-snapshot-repository</url>
       </repository>
       <snapshotRepository>
-         <uniqueVersion>false</uniqueVersion>
+         <uniqueVersion>true</uniqueVersion>
          <id>apache.snapshots</id>
          <name>Apache Development Snapshot Repository</name>
          <url>scp://people.apache.org/www/people.apache.org/repo/m2-snapshot-repository</url>