Stub out code for a host driven StagedRollbackTest.

The test doesn't test anything meaningful yet, but it builds and runs.

Bug: 124043688
Test: atest StagedRollbackTest
Change-Id: If9b5d57e28846b0ba28a580b74a486bbedb8f8d5
diff --git a/tests/RollbackTest/StagedRollbackTest.xml b/tests/RollbackTest/StagedRollbackTest.xml
new file mode 100644
index 0000000..2750d37
--- /dev/null
+++ b/tests/RollbackTest/StagedRollbackTest.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 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.
+-->
+<configuration description="Runs the staged rollback tests">
+    <option name="test-suite-tag" value="StagedRollbackTest" />
+    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+        <option name="cleanup-apks" value="true" />
+        <option name="test-file-name" value="RollbackTest.apk" />
+    </target_preparer>
+    <test class="com.android.tradefed.testtype.HostTest" >
+        <option name="class" value="com.android.tests.rollback.host.StagedRollbackTest" />
+    </test>
+</configuration>