turn off adb root for cts.

Change-Id: I16148308abde2ecdebe4bd80465edaf40140d44e
diff --git a/tools/tradefed-host/res/config/cts.xml b/tools/tradefed-host/res/config/cts.xml
index 8c9ef7d..922c22b 100644
--- a/tools/tradefed-host/res/config/cts.xml
+++ b/tools/tradefed-host/res/config/cts.xml
@@ -16,6 +16,8 @@
 <configuration
     description="Runs a CTS plan from a pre-existing CTS installation">
 
+    <option name="enable-root" value="false" />
+    <option name="disable-keyguard" value="false" />
     <build_provider class="com.android.cts.tradefed.build.CtsBuildProvider" />
     <device_recovery class="com.android.tradefed.device.WaitDeviceRecovery" />
     <target_preparer class="com.android.cts.tradefed.targetprep.CtsSetup" />