Change QueryCacheStats field types from int -> long (elastic#2513)

(cherry picked from commit 739bd9d)

 Conflicts:
	specification/_types/Stats.ts

Author: flobernd

specification/_types/Stats.ts

@@ -147,14 +147,36 @@ export class PluginStats {
 }
 
 export class QueryCacheStats {
-  cache_count: integer
-  cache_size: integer
-  evictions: integer
-  hit_count: integer
+  /**
+   * Total number of entries added to the query cache across all shards assigned to selected nodes.
+   * This number includes current and evicted entries.
+   */
+  cache_count: long
+  /**
+   * Total number of entries currently in the query cache across all shards assigned to selected nodes.
+   */
+  cache_size: long
+  /**
+   * Total number of query cache evictions across all shards assigned to selected nodes.
+   */
+  evictions: long
+  /**
+   * Total count of query cache hits across all shards assigned to selected nodes.
+   */
+  hit_count: long
+  /**
+   * Total amount of memory used for the query cache across all shards assigned to selected nodes.
+   */
   memory_size?: ByteSize
   memory_size_in_bytes: long
-  miss_count: integer
-  total_count: integer
+  /**
+   * Total count of query cache misses across all shards assigned to selected nodes.
+   */
+  miss_count: long
+  /**
+   * Total count of hits and misses in the query cache across all shards assigned to selected nodes.
+   */
+  total_count: long
 }
 
 export class RecoveryStats {