Don't run test 688 with app image.

They don't work mith loading the same dex file multiple times.

Test: 688
Change-Id: I5b05636231250638738261ff2e80c2d6f448ef47
diff --git a/test/688-shared-library/run b/test/688-shared-library/run
new file mode 100644
index 0000000..fa6ab58
--- /dev/null
+++ b/test/688-shared-library/run
@@ -0,0 +1,19 @@
+#!/bin/bash
+#
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# App images are incompatible with what the test is doing: loading one
+# dex file multiple times.
+exec ${RUN} "${@}" --no-app-image