Enable ProjectID by default.

This is in conjunction with enabling the project id for internal directories. The check whether project ids should be used or not, is done in installd process. If they cannot be used, then the installd process falls back to previous approaches.

Bug: b/215154615
Test: atest installd/StorageHostTest
Test: atest installd/installd_service_test.cpp
Change-Id: I9a45a14cf10c040f7ce84f78c5e9c8ce60c17958