Enable full stack trace printing on new-gradle

Change-Id: I16da66f7635b973558e2a6df244e7357a03a896f
diff --git a/tools/test.py b/tools/test.py
index ff8ff8d..6bb238c 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -372,6 +372,8 @@
     gradle_args.append(':main:r8WithRelocatedDeps')
     gradle_args.append(':test:cleanTest')
     gradle_args.append('test:test')
+    gradle_args.append('--stacktrace')
+    gradle_args.append('-Pprint_full_stacktraces')
   else:
     gradle_args.append('r8WithRelocatedDeps')
     gradle_args.append('r8WithRelocatedDeps17')