Extend the timeout to make sure test to be passed in low performed devices...

Extend the timeout to make sure test to be passed in low performed devices which take time to handle background intents from the queue.

Some GMS packages or carrier specific applications can make dispatching delays during processing ManagedProfileTest test cases.

Bug: 131668220
Test: run cts -m CtsDevicePolicyManagerTestCases -t com.android.cts.devicepolicy.ManagedProfileTest#testLockNowWithKeyEviction

Change-Id: I95990da265c4c743e8dcb194f3e34d78ebce6d05
Signed-off-by: Mark Hong <sungmin.h@samsung.com>