qa: Add test/fuzz/test_runner.py

test/config.ini.in

@@ -16,4 +16,5 @@ RPCAUTH=@abs_top_srcdir@/share/rpcauth/rpcauth.py
 @ENABLE_WALLET_TRUE@ENABLE_WALLET=true
 @BUILD_BITCOIN_CLI_TRUE@ENABLE_CLI=true
 @BUILD_BITCOIND_TRUE@ENABLE_BITCOIND=true
+@ENABLE_FUZZ_TRUE@ENABLE_FUZZ=true
 @ENABLE_ZMQ_TRUE@ENABLE_ZMQ=true