lnd: removing activeNetParams global, passed around instead via configs

This commit removes the activeNetParams global in chainparams.go. This
is necessary to isolate code from the lnd package so we can import it
for use in tests, other projects, etc.

lnd.go

@@ -514,7 +514,7 @@ func Main(cfg *Config, lisCfg ListenerCfg, shutdownChan <-chan struct{}) error {
 		towerDBDir := filepath.Join(
 			cfg.Watchtower.TowerDir,
 			cfg.registeredChains.PrimaryChain().String(),
-			normalizeNetwork(activeNetParams.Name),
+			normalizeNetwork(cfg.ActiveNetParams.Name),
 		)
 
 		towerDB, err := wtdb.OpenTowerDB(towerDBDir)
@@ -552,7 +552,7 @@ func Main(cfg *Config, lisCfg ListenerCfg, shutdownChan <-chan struct{}) error {
 				towerKeyDesc, activeChainControl.keyRing,
 			),
 			PublishTx: activeChainControl.wallet.PublishTransaction,
-			ChainHash: *activeNetParams.GenesisHash,
+			ChainHash: *cfg.ActiveNetParams.GenesisHash,
 		}
 
 		// If there is a tor controller (user wants auto hidden services), then
@@ -604,7 +604,7 @@ func Main(cfg *Config, lisCfg ListenerCfg, shutdownChan <-chan struct{}) error {
 	// Set up an autopilot manager from the current config. This will be
 	// used to manage the underlying autopilot agent, starting and stopping
 	// it at will.
-	atplCfg, err := initAutoPilot(server, cfg.Autopilot, mainChain)
+	atplCfg, err := initAutoPilot(server, cfg.Autopilot, mainChain, cfg.ActiveNetParams)
 	if err != nil {
 		err := fmt.Errorf("unable to initialize autopilot: %v", err)
 		ltndLog.Error(err)
@@ -974,7 +974,7 @@ func waitForWalletPassword(cfg *Config, restEndpoints []net.Addr,
 		cfg.AdminMacPath, cfg.ReadMacPath, cfg.InvoiceMacPath,
 	}
 	pwService := walletunlocker.New(
-		chainConfig.ChainDir, activeNetParams.Params, !cfg.SyncFreelist,
+		chainConfig.ChainDir, cfg.ActiveNetParams.Params, !cfg.SyncFreelist,
 		macaroonFiles,
 	)
 	lnrpc.RegisterWalletUnlockerServer(grpcServer, pwService)
@@ -1069,10 +1069,10 @@ func waitForWalletPassword(cfg *Config, restEndpoints []net.Addr,
 		}
 
 		netDir := btcwallet.NetworkDir(
-			chainConfig.ChainDir, activeNetParams.Params,
+			chainConfig.ChainDir, cfg.ActiveNetParams.Params,
 		)
 		loader := wallet.NewLoader(
-			activeNetParams.Params, netDir, !cfg.SyncFreelist,
+			cfg.ActiveNetParams.Params, netDir, !cfg.SyncFreelist,
 			recoveryWindow,
 		)