Give easy flag to disable Direct Boot emulation.

Direct Boot emulation is encouraged to help developers test their
apps, but it's not required.

Test: cts-tradefed run cts-dev --module CtsAppSecurityHostTestCases --test android.appsecurity.cts.DirectBootHostTest#testDirectBootEmulated
Bug: 30686636
Change-Id: I3bb2dd42c0f71e52d8b7cf8da7e50568f41aafb7
1 file changed