Query for all apps, even disabled from pm list

Prior this change, we were querying for application info using flags 0,
which was filtering out hidden, and disabled apps. We add flags to
avoid said filtering and thus avoid NPE.

Test: manual; pm list doesn't fail with NPE
Fixes: 123498040
Change-Id: I9c0f3d2335864872d9f695ab63f5568b7f22e53a