itest: have tapd skip cert verification

The mock oracle uses a self-signed certificate for TLS, but we're not
concerned with having tapd verify it in the itest environment. This
commit adds the 'experimental.rfq.priceoracletlsinsecure' flag added in
lightninglabs/taproot-assets#1775 to the litd args list, instructing
tapd not to verify certificates.

Author: jtobin

itest/litd_custom_channels_test.go

@@ -90,6 +90,7 @@ var (
 		"--taproot-assets.custodianproofretrievaldelay=500ms",
 	}
 	litdArgsTemplate = append(litdArgsTemplateNoOracle, []string{
+		"--taproot-assets.experimental.rfq.priceoracletlsinsecure",
 		"--taproot-assets.experimental.rfq.priceoracleaddress=" +
 			"use_mock_price_oracle_service_promise_to_" +
 			"not_use_on_mainnet",
@@ -99,6 +100,7 @@ var (
 	}...)
 
 	litdArgsTemplateDiffOracle = append(litdArgsTemplateNoOracle, []string{
+		"--taproot-assets.experimental.rfq.priceoracletlsinsecure",
 		"--taproot-assets.experimental.rfq.priceoracleaddress=" +
 			"use_mock_price_oracle_service_promise_to_" +
 			"not_use_on_mainnet",
@@ -4123,10 +4125,12 @@ func testCustomChannelsOraclePricing(ctx context.Context, net *NetworkHarness,
 
 	lndArgs := slices.Clone(lndArgsTemplate)
 	litdArgs := slices.Clone(litdArgsTemplateNoOracle)
-	litdArgs = append(litdArgs, fmt.Sprintf(
-		"--taproot-assets.experimental.rfq.priceoracleaddress="+
-			"rfqrpc://%s", oracleAddr,
-	))
+	litdArgs = append(litdArgs,
+		"--taproot-assets.experimental.rfq.priceoracletlsinsecure",
+		fmt.Sprintf(
+			"--taproot-assets.experimental.rfq.priceoracleaddress="+
+				"rfqrpc://%s", oracleAddr,
+		))
 
 	// We use Charlie as the proof courier. But in order for Charlie to also
 	// use itself, we need to define its port upfront.
@@ -4970,10 +4974,12 @@ func testCustomChannelsDecodeAssetInvoice(ctx context.Context,
 
 	lndArgs := slices.Clone(lndArgsTemplate)
 	litdArgs := slices.Clone(litdArgsTemplateNoOracle)
-	litdArgs = append(litdArgs, fmt.Sprintf(
-		"--taproot-assets.experimental.rfq.priceoracleaddress="+
-			"rfqrpc://%s", oracleAddr,
-	))
+	litdArgs = append(litdArgs,
+		"--taproot-assets.experimental.rfq.priceoracletlsinsecure",
+		fmt.Sprintf(
+			"--taproot-assets.experimental.rfq.priceoracleaddress="+
+				"rfqrpc://%s", oracleAddr,
+		))
 
 	// We'll just make a single node here, as this doesn't actually rely on
 	// a set of active channels.