8028478: Re-visit JPRT testsets to make it easier to run subsets of the tests

Reviewed-by: dholmes, sla, tbell
diff --git a/test/Makefile b/test/Makefile
index af84275..08b91bf 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -59,7 +59,7 @@
 langtools_% :
 	@$(NO_STOPPING)$(call SUBDIR_TEST, $(LANGTOOLS_DIR), JT_JAVA=$(PRODUCT_HOME) JTREG_HOME=$(JT_HOME) TEST="$(subst langtools_,,$@)" $(subst langtools_,,$@))
 
-jdk_% :
+jdk_% core_%s svc_%:
 	@$(NO_STOPPING)$(call SUBDIR_TEST, $(JDK_DIR), TEST="$@" $@)
 
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