Improve coverage of rollback_index.c

BUG=chromium-os:38139
BRANCH=none
TEST=make runtests

Change-Id: I21b62b5dd3fc6037f54f7c3bac768c2b67a4c12d
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/41859
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
diff --git a/Makefile b/Makefile
index 62af1ed..36d7a12 100644
--- a/Makefile
+++ b/Makefile
@@ -405,6 +405,7 @@
 TEST_NAMES = \
 	cgptlib_test \
 	rollback_index2_tests \
+	rollback_index3_tests \
 	rsa_padding_test \
 	rsa_utility_tests \
 	rsa_verify_benchmark \
@@ -932,6 +933,7 @@
 .PHONY: runmisctests
 runmisctests: test_setup
 	${RUNTEST} ${BUILD_RUN}/tests/rollback_index2_tests
+	${RUNTEST} ${BUILD_RUN}/tests/rollback_index3_tests
 	${RUNTEST} ${BUILD_RUN}/tests/rsa_utility_tests
 	${RUNTEST} ${BUILD_RUN}/tests/sha_tests
 	${RUNTEST} ${BUILD_RUN}/tests/stateful_util_tests