CTS Verifier NFC Tests

Bug 4539818

Adds the following tests:

- NDEF Push Sender - sends a specific NDEF message that another device
  running the NDEF Push Receiver will receive and validate

- NDEF Push Receiver - waits to recieve the message from the NDEF
  Push Sender and makes sure it matches

- NDEF and MifareUltralight Tag Verifiers - these tests write random
  data to tags and then prompts the user to scan them and checks that
  the data was properly written

Change-Id: I9c0604869a6027b475c056e79079a21c9760be91