Expose DISALLOW_ADD_PRIVATE_PROFILE

Allow profile owner of COPE devices to block private space
by setting DISALLOW_ADD_PRIVATE_PROFILE on the parent user.

Bug: 328758346
Test: PrivateProfileTest
Test: UserRestrictionsUtilsTest
Change-Id: Ibb3bf03378d0eafbafec01a9211f0ad931524b98
4 files changed