index.recovery.initial_shards is not being taken into account, closes elastic#1623.

Author: kimchy

modules/elasticsearch/src/main/java/org/elasticsearch/gateway/local/LocalGatewayAllocator.java

@@ -151,7 +151,7 @@ public class LocalGatewayAllocator extends AbstractComponent implements GatewayA
             int requiredAllocation = 1;
             try {
                 IndexMetaData indexMetaData = routingNodes.metaData().index(shard.index());
-                String initialShards = indexMetaData.settings().get("recovery.initial_shards", this.initialShards);
+                String initialShards = indexMetaData.settings().get("index.recovery.initial_shards", this.initialShards);
                 if ("quorum".equals(initialShards)) {
                     if (indexMetaData.numberOfReplicas() > 1) {
                         requiredAllocation = ((1 + indexMetaData.numberOfReplicas()) / 2) + 1;