The cul-de-sac ends at the top of a hill with a sweeping view of the San Fernando Valley. 56.15.2 of the city’s municipal code — “No person shall ride a skateboard on Hermano Drive” — reflect the contentiousness that occasionally flares up over its more dangerous manifestations. *** When L.A. Councilman Bob Blumenfield started getting calls in 2015 from some …