Enable system tests to work from VS Code Debugger.

Before this change, when launching some of the system tests from the
VS Code debugger UI, the machine loader was unable to locate the jit
binary because the system tests don't actually have "test" in path
leading up to the test executable.

validator/server_jit/machine_loader.go

@@ -27,13 +27,16 @@ var DefaultJitMachineConfig = JitMachineConfig{
 func getJitPath() (string, error) {
 	var jitBinary string
 	executable, err := os.Executable()
+	println("executable: ", executable)
 	if err == nil {
-		if strings.Contains(filepath.Base(executable), "test") {
+		if strings.Contains(filepath.Base(executable), "test") || strings.Contains(filepath.Dir(executable), "system_tests") {
 			_, thisfile, _, _ := runtime.Caller(0)
 			projectDir := filepath.Dir(filepath.Dir(filepath.Dir(thisfile)))
+			println("projectDir: ", projectDir)
 			jitBinary = filepath.Join(projectDir, "target", "bin", "jit")
 		} else {
 			jitBinary = filepath.Join(filepath.Dir(executable), "jit")
+			println("inside else: ", jitBinary)
 		}
 		_, err = os.Stat(jitBinary)
 	}