Increase the timeout to 6s when ApkChecksum getResult

CtsContentTestCase app size increase 3 times as compare to legacy one,
ChecksumsTest use asynchronous communication of binder, so the max
timeout standarnd is not enough for legacy low end platform, enlarge it.

Bug: 241029979
Test: run ChecksumsTest pass

Change-Id: I68c29f156a7da5b82a8bb1cdc74bf25793ae9ffd
(cherry picked from commit f0590868899652f0952c382f2c5302d11ba96789)
1 file changed