This was a big week for Palo Alto Networks Inc., as the cybersecurity market leader celebrated turned 20 this week with multiple activities, including its “Ignite on Tour” event in New York and ringing the closing bell at the New York Stock Exchange. At Ignite Wednesday, Palo Alto announced a multiyear partnership with the National Hockey League to strengthen cybersecurity across the league — from behind-the-scenes operations to what fans experience online and in arenas.