ExternalStorageTest: Use a larger timestamp.

The previous timestamp used was in the 1970s, and can't be represented
correctly on (V)FAT filesystems.

Bug: 157530951
Test: atest
android.appsecurity.cts.ExternalStorageHostTest#testExternalStorageWrite

Change-Id: If131b92ae46cc65bad01d13ba901ef18bea0950c
Merged-In: If131b92ae46cc65bad01d13ba901ef18bea0950c
(cherry picked from commit 1f7a9428ee7e5fa8c16d790b33db8ee62de26883)
diff --git a/hostsidetests/appsecurity/test-apps/ExternalStorageApp/src/com/android/cts/externalstorageapp/CommonExternalStorageTest.java b/hostsidetests/appsecurity/test-apps/ExternalStorageApp/src/com/android/cts/externalstorageapp/CommonExternalStorageTest.java
index 7db3682..8fdf859 100644
--- a/hostsidetests/appsecurity/test-apps/ExternalStorageApp/src/com/android/cts/externalstorageapp/CommonExternalStorageTest.java
+++ b/hostsidetests/appsecurity/test-apps/ExternalStorageApp/src/com/android/cts/externalstorageapp/CommonExternalStorageTest.java
@@ -103,7 +103,7 @@
      * Verify we can write to our own package dirs.
      */
     public void testAllPackageDirsWritable() throws Exception {
-        final long testValue = 12345000;
+        final long testValue = 1234500000000L;
         final List<File> paths = getAllPackageSpecificPaths(getContext());
         for (File path : paths) {
             assertNotNull("Valid media must be inserted during CTS", path);