property_contexts: split into platform and non-platform components

Bug: 33746484
Bug: 34370523
Test: Successfully boot with original service and property contexts.
Test: Successfully boot with split serivce and property contexts.
Test: Incremental build works on sailfish (reported in b/34370523)
Test: adb sideload works with aosp updater (reported in b/34370523)

Change-Id: Idf24856193032a8bc89ec384a72451e578a9d5ac
Signed-off-by: Sandeep Patil <sspatil@google.com>