SLING-3520 - Consolidate archetype plugin versions in a parent pom

Revert version to 1-SNAPSHOT

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1591296 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 30a4f37..6d89cd5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
     <groupId>org.apache.sling</groupId>
     <artifactId>sling-archetype-parent</artifactId>
     <packaging>pom</packaging>
-    <version>2-SNAPSHOT</version>
+    <version>1-SNAPSHOT</version>
 
     <name>Apache Sling Archetype Parent</name>
     <description>The parent project for Apache Sling archetypes.</description>