Make minimum gc sleep time tunnable

Bug: 241601436
Test: check smart idle maint log of StorageManagerService
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Change-Id: I004bb6752e84d26b041cfdd27848949f6e49d05e
Merged-In: I004bb6752e84d26b041cfdd27848949f6e49d05e
1 file changed