Ultimately you're talking about a couple hundred Nuyen worth of gear, so unless you're a Resources E character it's likely a trivial expense.
There are, effectively, three interpretations.
Lowest cost, Lockpicks work for all Locksmith tests - 200 Nuyen IIRC
Middle ground, Locksmith Tool kit required for Locksmith Tests - 500 Nuyen IIRC
Highest cost, you need both Lock Picks and Locksmith Tool Kit to cover all locks, 700 Nuyen for both.
I can honestly see arguments for any of them. Personally I feel that the Gear list didn't get updated with the Skill changes and Lockpicks should get tossed, but that's me.