kv:resolve three complication warnings

kv:resolve three complication warnings

Resolve three warning issues in the derived classes overriding base class virtual functions with mismatched parameter lists at lines 69, 72, and 74 in src/kv/rocksdb_cache/ShardedCache.h.
with ../src/kv/rocksdb_cache/ShardedCache.h:74:16: warning:   by 'virtual bool rocksdb_cache::ShardedCache::Release(rocksdb::Cache::Handle*, bool)' [-Woverloaded-virtual]
   virtual bool Release(rocksdb::Cache::Handle* handle, bool force_erase = false) override;
                ^~~~~~~
../src/kv/rocksdb_cache/ShardedCache.h:72:35: warning:   by 'virtual rocksdb::Cache::Handle* rocksdb_cache::ShardedCache::Lookup(const rocksdb::Slice&, rocksdb::Statistics*)' [-Woverloaded-virtual]
   virtual rocksdb::Cache::Handle* Lookup(const rocksdb::Slice& key, rocksdb::Statistics* stats) override;
                                   ^~~~~~
../src/kv/rocksdb_cache/ShardedCache.h:69:27: warning:   by 'virtual rocksdb::Status rocksdb_cache::ShardedCache::Insert(const rocksdb::Slice&, void*, size_t, rocksdb::Cache::DeleterFn, rocksdb::Cache::Handle**, rocksdb::Cache::Priority)' [-Woverloaded-virtual]
   virtual rocksdb::Status Insert(const rocksdb::Slice& key, void* value, size_t charge,
                           ^~~~~~

Signed-off-by: cuiming <cuiming_yewu@cmss.chinamobile.com>