Change disable timeout for BT disable stress test

Bug: b/3125900
Change-Id: Ie1f599f1c418fc40c29debd1401297441a2a9db3
diff --git a/core/tests/coretests/src/android/bluetooth/BluetoothTestUtils.java b/core/tests/coretests/src/android/bluetooth/BluetoothTestUtils.java
index f7bb1f9..a9025fb 100644
--- a/core/tests/coretests/src/android/bluetooth/BluetoothTestUtils.java
+++ b/core/tests/coretests/src/android/bluetooth/BluetoothTestUtils.java
@@ -38,7 +38,7 @@
     /**
      * Timeout for {@link BluetoothAdapter#disable()} in ms.
      */
-    private static final int DISABLE_TIMEOUT = 5000;
+    private static final int DISABLE_TIMEOUT = 20000;
 
     /**
      * Timeout for {@link BluetoothAdapter#enable()} in ms.