Install tradefed dynamic config file in soong-only builds

Make has this behavior where it will find a DynamicConfig.xml file in
the same directory in the module and install it next to the main
tradefed config file. Recreate that behavior in soong-only builds.
https://cs.android.com/android/platform/superproject/main/+/main:build/make/core/base_rules.mk;l=859;drc=6a8fff595ba4cbb87b7e124fd630f548c5c4e2cb

Bug: 396761822
Test: SOONG_ONLY=true atest -m -c CtsNetTestCases -- --test-arg com.android.testutils.ConnectivityTestTargetPreparer:ignore-mobile-data-check:true
Change-Id: I69f1c262200d62cc0d3c590b6adbeb401af63ab9
diff --git a/python/test.go b/python/test.go
index 5e70fc1..df62ab7 100644
--- a/python/test.go
+++ b/python/test.go
@@ -224,6 +224,10 @@
 			if p.testConfig != nil {
 				ctx.InstallFile(testCases, ctx.ModuleName()+".config", p.testConfig)
 			}
+			dynamicConfig := android.ExistentPathForSource(ctx, ctx.ModuleDir(), "DynamicConfig.xml")
+			if dynamicConfig.Valid() {
+				ctx.InstallFile(testCases, ctx.ModuleName()+".dynamic", dynamicConfig.Path())
+			}
 		}
 		// Install tests and data in arch specific subdir $PRODUCT_OUT/testcases/$module/$arch
 		testCases = testCases.Join(ctx, ctx.Target().Arch.ArchType.String())