Update launch.json with system manifest file

Author: renuka-fernando

.vscode/launch.json

@@ -39,6 +39,7 @@
             "program": "${workspaceFolder}/gateway/gateway-builder/cmd/builder",
             "args": [
                 "-manifest-lock", "${workspaceFolder}/gateway/policies/policy-manifest-lock.yaml",
+                "-system-manifest-lock", "${workspaceFolder}/gateway/system-policies/system-policy-manifest-lock.yaml",
                 "-policy-engine-src", "${workspaceFolder}/gateway/policy-engine",
                 "-out-dir", "${workspaceFolder}/gateway/gateway-builder/target/output",
                 "-log-level", "debug",