Merge pull request #1992 from nishanttotla/update_swarm_v1.2.4

update swarm v1.2.4

library/swarm

@@ -5,6 +5,5 @@
 # maintainer: Victor Vieux <[email protected]> (@vieux)
 
 
-1.2.3: git://github.com/docker/swarm-library-image@a1b25fc6cd2a6175d17a8ae5241c31996e8faaa8
-1.2.4-rc2: git://github.com/docker/swarm-library-image@925e43d214604e3522a1e5882e2557fdb006f3d2
-latest: git://github.com/docker/swarm-library-image@a1b25fc6cd2a6175d17a8ae5241c31996e8faaa8
+1.2.4: git://github.com/docker/swarm-library-image@ad016670d877529ab32e7ef2a1323777a06cb46a
+latest: git://github.com/docker/swarm-library-image@ad016670d877529ab32e7ef2a1323777a06cb46a