use redis-sharelatex with redis cluster config

services/track-changes/app/coffee/RedisManager.coffee

@@ -1,14 +1,12 @@
 Settings = require "settings-sharelatex"
 redis = require("redis-sharelatex")
-rclient = redis.createClient(Settings.redis.web)
-
-rawUpdatesKey = (doc_id) -> "UncompressedHistoryOps:#{doc_id}"
-docsWithHistoryOpsKey = (project_id) -> "DocsWithHistoryOps:#{project_id}"
+rclient = redis.createClient(Settings.redis.history)
+Keys = Settings.redis.history.key_schema
 
 module.exports = RedisManager =
 
 	getOldestDocUpdates: (doc_id, batchSize, callback = (error, jsonUpdates) ->) ->
-		key = rawUpdatesKey(doc_id)
+		key = Keys.uncompressedHistoryOps({doc_id})
 		rclient.lrange key, 0, batchSize - 1, callback
 
 	expandDocUpdates: (jsonUpdates, callback = (error, rawUpdates) ->) ->
@@ -22,13 +20,13 @@ module.exports = RedisManager =
 		multi = rclient.multi()
 		# Delete all the updates which have been applied (exact match)
 		for update in docUpdates or []
-			multi.lrem rawUpdatesKey(doc_id), 0, update
+			multi.lrem Keys.uncompressedHistoryOps({doc_id}), 0, update
 		# It's ok to delete the doc_id from the set here. Even though the list
 		# of updates may not be empty, we will continue to process it until it is.
-		multi.srem  docsWithHistoryOpsKey(project_id), doc_id
+		multi.srem Keys.docsWithHistoryOps({project_id}), doc_id
 		multi.exec (error, results) ->
 			return callback(error) if error?
 			callback null
 
 	getDocIdsWithHistoryOps: (project_id, callback = (error, doc_ids) ->) ->
-		rclient.smembers docsWithHistoryOpsKey(project_id), callback
+		rclient.smembers Keys.docsWithHistoryOps({project_id}), callback