Add some more properties to the bp2build APEX converter.

In particular:

- AndroidManifest
- file_contexts
- key
- certificate
- min_sdk_version
- updatable
- installable
- native_shared_libs
- binaries

Test: Updated unit test

Change-Id: I9ea13f021d63ec0f75006b3b0b23ec8178c7e9da

java/app.go

@@ -1104,6 +1104,8 @@ func AndroidTestHelperAppFactory() android.Module {
 
 type AndroidAppCertificate struct {
 	android.ModuleBase
+	android.BazelModuleBase
+
 	properties  AndroidAppCertificateProperties
 	Certificate Certificate
 }
@@ -1119,6 +1121,7 @@ func AndroidAppCertificateFactory() android.Module {
 	module := &AndroidAppCertificate{}
 	module.AddProperties(&module.properties)
 	android.InitAndroidModule(module)
+	android.InitBazelModule(module)
 	return module
 }