Move ep-engine branch forward one commit

Change-Id: I624de1f645e045f64b3d47ea52eb8e026c8a0c3e
Reviewed-on: http://review.couchbase.org/23484
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Tested-by: Michael Wiederhold <mike@couchbase.com>

2.1-stable.xml

@@ -11,7 +11,7 @@
   </project>
 
   <project name="bucket_engine" path="bucket_engine" />
-  <project name="ep-engine" path="ep-engine" revision="443c735924cb4647d13b03dc9dd719e8dad83913"/>
+  <project name="ep-engine" path="ep-engine" revision="a33607a72655e1f74c1a4edaa18614725e4d1f4a"/>
   <project name="libconflate" path="libconflate" revision="branch-20"/>
   <project name="libmemcached" path="libmemcached" remote="membase" />
   <project name="libvbucket" path="libvbucket" />