Add short codes for DCB to free UK and 44567 to standard US.

UK short codes are used by Direct Carrier Billing (DCB) on
Google Play. US short code excludes the Google Wallet dedicated
short code (being used by the Google Wallet team to send
notifications to users) from premium phone numbers.

b/26483906

Change-Id: I51ddf484d459400dd8a7a22df78ce65e12760a1e
Signed-off-by: Vasco Brito <vascob@google.com>