Test: no denials showing up in log collection
Test: device boots
Bug: 28760354
Change-Id: I089cfcf486464952fcbb52cce9f6152caf662c23

Divide policy into public and private components.  This is the first
step in splitting the policy creation for platform and non-platform
policies.  The policy in the public directory will be exported for use
in non-platform policy creation.  Backwards compatibility with it will
be achieved by converting the exported policy into attribute-based
policy when included as part of the non-platform policy and a mapping
file will be maintained to be included with the platform policy that
maps exported attributes of previous versions to the current platform
version.

Eventually we would like to create a clear interface between the
platform and non-platform device components so that the exported policy,
and the need for attributes is minimal.  For now, almost all types and
avrules are left in public.

Test: Tested by building policy and running on device.

Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c

Currently vdc emits logs to stderr, which makes sense for command
line invocations, but when exec'ed they're silently dropped unless
the caller uses logwrapper.

avc: denied { read write } for path="/dev/pts/2" dev="devpts" ino=5 scontext=u:r:vdc:s0 tcontext=u:object_r:devpts:s0 tclass=chr_file permissive=0

Bug: 25796509
Change-Id: Ib92e0a7f580b1934a9853a83684f95b24bdc355c

Motivation: Domain is overly permissive. Start removing permissions
from domain and assign them to the domain_deprecated attribute.
Domain_deprecated and domain can initially be assigned to all
domains. The goal is to not assign domain_deprecated to new domains
and to start removing domain_deprecated where it is not required or
reassigning the appropriate permissions to the inheriting domain
when necessary.

Bug: 25433265
Change-Id: I8b11cb137df7bdd382629c98d916a73fe276413c

dumpstate uses vdc to collect asec lists and do a vold dump.
Force a transition into the vdc domain when this occurs.

Addresses the following denial:

  <4>[ 1099.623572] type=1400 audit(1403716545.565:7): avc: denied { execute } for pid=6987 comm="dumpstate" name="vdc" dev="mmcblk0p8" ino=222 scontext=u:r:dumpstate:s0 tcontext=u:object_r:vdc_exec:s0 tclass=file permissive=0

Change-Id: I4bd9f3ad83480f8c9f9843ffe136295c582f96fe

The init.rc one-shot services "defaultcrypto" and "encrypt" call
out to the /system/bin/vdc command line to ask vold to perform
encryption operations. Create a new domain for these one-shot
services. Allow the vdc domain to talk to vold.

Change-Id: I73dc2ee4cc265bc16056b27307c254254940fd9f