Update elasticsearch to 2.2.1

library/elasticsearch

@@ -22,7 +22,7 @@
 2.1.2: git://github.com/docker-library/elasticsearch@2ceaacde5b9dcc3e15f5daa4b1a282bf0f190d2b 2.1
 2.1: git://github.com/docker-library/elasticsearch@2ceaacde5b9dcc3e15f5daa4b1a282bf0f190d2b 2.1
 
-2.2.0: git://github.com/docker-library/elasticsearch@2ceaacde5b9dcc3e15f5daa4b1a282bf0f190d2b 2.2
-2.2: git://github.com/docker-library/elasticsearch@2ceaacde5b9dcc3e15f5daa4b1a282bf0f190d2b 2.2
-2: git://github.com/docker-library/elasticsearch@2ceaacde5b9dcc3e15f5daa4b1a282bf0f190d2b 2.2
-latest: git://github.com/docker-library/elasticsearch@2ceaacde5b9dcc3e15f5daa4b1a282bf0f190d2b 2.2
+2.2.1: git://github.com/docker-library/elasticsearch@dce83166a2636abfac110a4555cdf17fd554ae91 2.2
+2.2: git://github.com/docker-library/elasticsearch@dce83166a2636abfac110a4555cdf17fd554ae91 2.2
+2: git://github.com/docker-library/elasticsearch@dce83166a2636abfac110a4555cdf17fd554ae91 2.2
+latest: git://github.com/docker-library/elasticsearch@dce83166a2636abfac110a4555cdf17fd554ae91 2.2