Add ART_TEST_RUN_TEST_IMAGE.

To prepare disabling this run on the no-image bot config.

Change-Id: Iebd51761ebde42d07beb7ecce3b84e738d03afe3
diff --git a/test/Android.run-test.mk b/test/Android.run-test.mk
index 4252753..05b8c53 100644
--- a/test/Android.run-test.mk
+++ b/test/Android.run-test.mk
@@ -161,7 +161,9 @@
 ifeq ($(ART_TEST_JNI_FORCECOPY),true)
   JNI_TYPES += forcecopy
 endif
+ifeq ($(ART_TEST_RUN_TEST_IMAGE),true)
 IMAGE_TYPES := picimage
+endif
 ifeq ($(ART_TEST_RUN_TEST_NO_IMAGE),true)
   IMAGE_TYPES += no-image
 endif