Adjust arangodb according to review comments

library/arangodb

@@ -1,5 +1,7 @@
 # maintainer: Frank Celler <[email protected]> (@fceller)
 # maintainer: Wilfried Goesgens <[email protected]> (@dothebart)
 
-2.5.3: git://github.com/arangodb/arangodb-docker@bb50713d9f6986f113f02ecdfa8c84134c2d88ec jessie/2.5.3
-latest: git://github.com/arangodb/arangodb-docker@bb50713d9f6986f113f02ecdfa8c84134c2d88ec jessie/2.5.3
+2.5.3: git://github.com/arangodb/arangodb-docker@1a13c1dfa561b3c8ccf9d9b3bef46ed95b3ed740 jessie/2.5.3
+2.5.4: git://github.com/arangodb/arangodb-docker@1a13c1dfa561b3c8ccf9d9b3bef46ed95b3ed740 jessie/2.5.4
+2.5.5: git://github.com/arangodb/arangodb-docker@023bc25eb5cc0db82725d43034dd7608ad06b9dc jessie/2.5.5
+latest: git://github.com/arangodb/arangodb-docker@1a13c1dfa561b3c8ccf9d9b3bef46ed95b3ed740 jessie/latest