Fix missing test name after aosp/2372150

The test name defaulting to ctx.ModuleName() was
accidentally removed, readd it

Bug: 184895128
Fixes: 264423240
Fixes: 264433459
Test: Verified ninja files produced with this cl and aosp/2372150 are the same as with aosp/2372150 reverted
Change-Id: I23ab8ab39132b93719cc6f797d92b1cabce5eae9
diff --git a/tradefed/autogen.go b/tradefed/autogen.go
index e93bac3..49b09af 100644
--- a/tradefed/autogen.go
+++ b/tradefed/autogen.go
@@ -155,19 +155,23 @@
 	for _, c := range options.OptionsForAutogenerated {
 		configs = append(configs, c)
 	}
+	name := options.Name
+	if name == "" {
+		name = ctx.ModuleName()
+	}
 	path, autogenPath := testConfigPath(ctx, options.TestConfigProp, options.TestSuites, options.AutoGenConfig, options.TestConfigTemplateProp)
 	if autogenPath != nil {
 		templatePath := getTestConfigTemplate(ctx, options.TestConfigTemplateProp)
 		if templatePath.Valid() {
-			autogenTemplate(ctx, options.Name, autogenPath, templatePath.String(), configs, options.OutputFileName, options.TestInstallBase)
+			autogenTemplate(ctx, name, autogenPath, templatePath.String(), configs, options.OutputFileName, options.TestInstallBase)
 		} else {
 			if ctx.Device() {
-				autogenTemplate(ctx, options.Name, autogenPath, options.DeviceTemplate, configs, options.OutputFileName, options.TestInstallBase)
+				autogenTemplate(ctx, name, autogenPath, options.DeviceTemplate, configs, options.OutputFileName, options.TestInstallBase)
 			} else {
 				if Bool(options.UnitTest) {
-					autogenTemplate(ctx, options.Name, autogenPath, options.HostUnitTestTemplate, configs, options.OutputFileName, options.TestInstallBase)
+					autogenTemplate(ctx, name, autogenPath, options.HostUnitTestTemplate, configs, options.OutputFileName, options.TestInstallBase)
 				} else {
-					autogenTemplate(ctx, options.Name, autogenPath, options.HostTemplate, configs, options.OutputFileName, options.TestInstallBase)
+					autogenTemplate(ctx, name, autogenPath, options.HostTemplate, configs, options.OutputFileName, options.TestInstallBase)
 				}
 			}
 		}