Split the build of the CTS infrastructure from the tests.

This allows developers to build the test packages individually without
needing to build the entire CTS release.

Add new build target for support packages

bug: 18945639
Change-Id: I60b79797b2d254b96aa98f88cfd5b19d195ea982
diff --git a/tests/cts/hostside/app/Android.mk b/tests/cts/hostside/app/Android.mk
index 29b620d..055287a 100644
--- a/tests/cts/hostside/app/Android.mk
+++ b/tests/cts/hostside/app/Android.mk
@@ -29,4 +29,4 @@
 LOCAL_PROGUARD_ENABLED := disabled
 LOCAL_DEX_PREOPT := false
 
-include $(BUILD_PACKAGE)
+include $(BUILD_CTS_SUPPORT_PACKAGE)