Fix StorageManagerTest

While running StorageManagerTest in situation that some other process is having open files
on emualted storage, the test is failing due to timeout(15 seconds).
This is happening because "vold" needs around 15 seconds to kill that particular process.

Solution is to increase timeout to 30 seconds.

Bug: 215859718
Fixes: 215859718
Test: StroageManagerTest CTS
Change-Id: I97c4bf30bb11dc0898f4d1f77ba3f781be47d736
1 file changed