Allow ManagedProvisioning to silently uninstall apps

1. During device owner provisioning, ManagedProvisioning uninstalls
non-required apps. Apps to remove are all system apps in the reference
device. On the other hand, OEM devices have several non system apps,
so ManagedProvisioning can not uninstall them and can not complete
device owner provisioning permarnently.

2. This commit allows ManagedProvisioning having
MANAGE_PROFILE_AND_DEVICE_OWNERS permission to uninstall non-required
apps silently.

Bug: 37681141

Test: manual

Signed-off-by : Sungmin Lee <insight.lee@lge.com>

Change-Id: I201b070f4bcf453a2ffb391600853c7e595aec5d