[releng] Update SWTbot to p2 URL for Luna

Change-Id: I0be17f543623a32024c1801e139a6aca4c98ff8d
diff --git a/releng/org.eclipse.cdt.target/cdt-e4.4.target b/releng/org.eclipse.cdt.target/cdt-e4.4.target
index 12f2c0b..f277486 100644
--- a/releng/org.eclipse.cdt.target/cdt-e4.4.target
+++ b/releng/org.eclipse.cdt.target/cdt-e4.4.target
@@ -19,7 +19,7 @@
 <unit id="org.eclipse.swtbot.eclipse.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.swtbot.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.swtbot.eclipse.test.junit.feature.group" version="0.0.0"/>
-<repository location="http://download.eclipse.org/technology/swtbot/releases/latest/"/>
+<repository location="http://download.eclipse.org/technology/swtbot/releases/2.2.1/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.rse.feature.group" version="0.0.0"/>