QA: Avoid re-reading config.ini unnecessarily
QA: Avoid re-reading config.ini unnecessarily

BitcoinTestFramework.main already loads and stores config.ini on the object itself; just access that instead of re-reading the file to check for features

peercoin/peercoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin