Tag apps as tests in order to embed JNI libs.

Also it makes sure the apps won't be installed to system.img.

Change-Id: If309ae47b5dba0525c6aec49cabaddd46a15181c
diff --git a/suite/cts/deviceTests/dram/Android.mk b/suite/cts/deviceTests/dram/Android.mk
index c1c91a5..13de747 100644
--- a/suite/cts/deviceTests/dram/Android.mk
+++ b/suite/cts/deviceTests/dram/Android.mk
@@ -16,7 +16,7 @@
 include $(CLEAR_VARS)
 
 # don't include this package in any target
-LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_TAGS := tests
 
 LOCAL_STATIC_JAVA_LIBRARIES := ctsdeviceutil ctstestrunner
 
diff --git a/suite/cts/deviceTests/opengl/Android.mk b/suite/cts/deviceTests/opengl/Android.mk
index 9826320..7e93dd7 100644
--- a/suite/cts/deviceTests/opengl/Android.mk
+++ b/suite/cts/deviceTests/opengl/Android.mk
@@ -16,7 +16,7 @@
 include $(CLEAR_VARS)
 
 # don't include this package in any target
-LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_TAGS := tests
 
 LOCAL_STATIC_JAVA_LIBRARIES := ctsdeviceutil ctstestrunner
 
diff --git a/suite/cts/deviceTests/simplecpu/Android.mk b/suite/cts/deviceTests/simplecpu/Android.mk
index dbb8a6c..cc25223 100644
--- a/suite/cts/deviceTests/simplecpu/Android.mk
+++ b/suite/cts/deviceTests/simplecpu/Android.mk
@@ -16,7 +16,7 @@
 include $(CLEAR_VARS)
 
 # don't include this package in any target
-LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_TAGS := tests
 
 LOCAL_STATIC_JAVA_LIBRARIES := ctsdeviceutil ctstestrunner