adjust sdcard dir

Bug: 7155893
Change-Id: Id8166ae943db0141c40ed79bbb4937ad795af66a
diff --git a/hostsidetests/appsecurity/src/com/android/cts/appsecurity/AppSecurityTests.java b/hostsidetests/appsecurity/src/com/android/cts/appsecurity/AppSecurityTests.java
index e42ac3b..5c28a4f 100644
--- a/hostsidetests/appsecurity/src/com/android/cts/appsecurity/AppSecurityTests.java
+++ b/hostsidetests/appsecurity/src/com/android/cts/appsecurity/AppSecurityTests.java
@@ -17,6 +17,7 @@
 package com.android.cts.appsecurity;
 
 import com.android.cts.tradefed.build.CtsBuildHelper;
+import com.android.ddmlib.IDevice;
 import com.android.ddmlib.Log;
 import com.android.ddmlib.testrunner.RemoteAndroidTestRunner;
 import com.android.ddmlib.testrunner.TestIdentifier;
@@ -209,7 +210,8 @@
             getDevice().uninstallPackage(WRITE_EXTERNAL_STORAGE_APP_PKG);
 
             // stage test file on external storage
-            getDevice().pushString("CAEK", "/sdcard/meow");
+            getDevice().pushString("CAEK",
+                    getDevice().getMountPoint(IDevice.MNT_EXTERNAL_STORAGE) + "/meow");
 
             // mark permission as not enforced
             setPermissionEnforced(getDevice(), READ_EXTERNAL_STORAGE, false);