Merge pull request #1783 from nishanttotla/update_swarm_v1.2.3

update swarm v1.2.3

library/swarm

@@ -14,5 +14,5 @@
 1.2.0: git://github.com/docker/swarm-library-image@0a35988bfcb18ed0aeb646b511e43e78bc940d07
 1.2.1: git://github.com/docker/swarm-library-image@9d4e009b40520720ceb270408b8078284df9513e
 1.2.2: git://github.com/docker/swarm-library-image@1f9089c40ac560e7b4c878ad6bd7803f4f061e82
-1.2.3-rc1: git://github.com/docker/swarm-library-image@7f1d7c958f92b68cd2b99149daf19fd072852f77
-latest: git://github.com/docker/swarm-library-image@1f9089c40ac560e7b4c878ad6bd7803f4f061e82
+1.2.3: git://github.com/docker/swarm-library-image@a1b25fc6cd2a6175d17a8ae5241c31996e8faaa8
+latest: git://github.com/docker/swarm-library-image@a1b25fc6cd2a6175d17a8ae5241c31996e8faaa8