Use case

For Top items widget I want to aggregate item patterns together under one name using aggregation function, so that it would be able to show one row/column for hosts incoming traffic for all network interfaces. 

Expected

Add fields for item pattern configuration:

• "Aggregate by item patterns" checkbox (unchecked default)
• "Column name" (show and mandatory when checked Aggregate item patterns)
• "Aggregation function" {min | max | avg | count | sum (default) } (show when checked Aggregate item patterns and display value as Numeric)