Add option test_min_api_level and test_min_sdk_version for auto-generated test config

The new option will allow the auto-generated test config for cc_test to
include MinApiLevelModuleController and check the api-level before test.

Bug: 140912549
Test: 1. $vi platform_testing/tests/example/native/Android.bp
      2. add
          test_min_api_level: 29,
          or
          test_min_sdk_version: 29,
      3. $m -j hello_world_test
      4. check hello_world_test.config

Change-Id: Ic742d41898928df1637890bec87796d90e886516
diff --git a/tradefed/autogen.go b/tradefed/autogen.go
index 7cd7c5a..1400345 100644
--- a/tradefed/autogen.go
+++ b/tradefed/autogen.go
@@ -73,26 +73,34 @@
 	return fmt.Sprintf(`<option name="%s" value="%s" />`, o.Name, o.Value)
 }
 
-type Preparer struct {
+// It can be a template of object or target_preparer.
+type Object struct {
+	// Set it as a target_preparer if object type == "target_preparer".
+	Type    string
 	Class   string
 	Options []Option
 }
 
-var _ Config = Preparer{}
+var _ Config = Object{}
 
-func (p Preparer) Config() string {
+func (ob Object) Config() string {
 	var optionStrings []string
-	for _, option := range p.Options {
+	for _, option := range ob.Options {
 		optionStrings = append(optionStrings, option.Config())
 	}
 	var options string
-	if len(p.Options) == 0 {
+	if len(ob.Options) == 0 {
 		options = ""
 	} else {
 		optionDelimiter := fmt.Sprintf("\\n%s%s", test_xml_indent, test_xml_indent)
 		options = optionDelimiter + strings.Join(optionStrings, optionDelimiter)
 	}
-	return fmt.Sprintf(`<target_preparer class="%s">%s\n%s</target_preparer>`, p.Class, options, test_xml_indent)
+	if ob.Type == "target_preparer" {
+		return fmt.Sprintf(`<target_preparer class="%s">%s\n%s</target_preparer>`, ob.Class, options, test_xml_indent)
+	} else {
+		return fmt.Sprintf(`<object type="%s" class="%s">%s\n%s</object>`, ob.Type, ob.Class, options, test_xml_indent)
+	}
+
 }
 
 func autogenTemplate(ctx android.ModuleContext, output android.WritablePath, template string, configs []Config) {