Generate mini-debug-info when running tests.

Ensure we get better backtraces from tests and make them profitable.

Test: manual (check that gcstress test can get backtraces on host)
Change-Id: Ie6ed399c331786c74c608ccc7f383795131cd46a
diff --git a/test/etc/run-test-jar b/test/etc/run-test-jar
index 7a75cfd..70b9967 100755
--- a/test/etc/run-test-jar
+++ b/test/etc/run-test-jar
@@ -903,6 +903,7 @@
                       --dex-file=$DEX_LOCATION/$TEST_NAME.jar \
                       --oat-file=$DEX_LOCATION/oat/$ISA/$TEST_NAME.odex \
                       ${app_image} \
+                      --generate-mini-debug-info \
                       --instruction-set=$ISA"
   if [ "x$INSTRUCTION_SET_FEATURES" != "x" ] ; then
     dex2oat_cmdline="${dex2oat_cmdline} --instruction-set-features=${INSTRUCTION_SET_FEATURES}"