With limited access to watch the San Antonio Spurs away games during the playoffs, thousands of fans are turning to community watch parties to witness a new generation of Silver and Black basketball for free.The Rock at La Cantera has turned into a hotspot with big TVs and a BYOC (bring-your-own-chair) culture that is true to San Antonio.>> WATCH: KSAT’s Ernie Zuniga joins Spurs fans at The Rock at La Cantera ahead of Game 2 against Timberwolves…