formula_renames: add missing elasticsearch/mysql.

formula_renames.json

@@ -8,6 +8,7 @@
   "cyassl": "wolfssl",
   "d-bus": "dbus",
   "elasticsearch17": "elasticsearch@1.7",
+  "elasticsearch24": "elasticsearch@2.4",
   "fig": "docker-compose",
   "geode": "apache-geode",
   "go-app-engine-32": "app-engine-go-32",
@@ -23,6 +24,8 @@
   "libmongoclient": "mongo-cxx-driver",
   "mongo-c": "mongo-c-driver",
   "mpich2": "mpich",
+  "mysql55": "mysql@5.5",
+  "mysql56": "mysql@5.6",
   "nimrod": "nim",
   "objective-caml": "ocaml",
   "offline-imap": "offlineimap",