Update logging to the common logging format for all the projects.

cache.go

@@ -4,11 +4,11 @@ func (c *BaseClient) cacheLookup(hash string) []byte {
 	if c.cache.client != nil {
 		obj, found := c.cache.client.Get(hash)
 		if found {
-			c.Logger.Debug(c, "Cache hit;", "hash", hash)
+			c.Logger.Debug("Cache hit", map[string]interface{}{"hash": hash})
 			return obj
 		}
 		// if error is not nil it means that hash is not present in cache
-		c.Logger.Debug(c, "Cache miss;", "hash", hash)
+		c.Logger.Debug("Cache miss", map[string]interface{}{"hash": hash})
 	}
 	return nil
 }