Bug 571864: [build] add compressed artifacts to EASE p2 update sites

  update tycho version from copy script to 2.2.0 which supports that
  feature by default

Change-Id: Ideba04a274de211fd2f7f1a49c8d1c103a1d631a
diff --git a/plugins/org.eclipse.ease.help/pom.xml b/plugins/org.eclipse.ease.help/pom.xml
index 6e6a6c7..89eb267 100644
--- a/plugins/org.eclipse.ease.help/pom.xml
+++ b/plugins/org.eclipse.ease.help/pom.xml
@@ -69,4 +69,4 @@
 			</plugin>
 		</plugins>
 	</build>
-</project>
\ No newline at end of file
+</project>