Add free short codes for Direct Carrier Billing and others.

Whitelist free short code batch 2016 Q1 - Android Partner
Engineering.
All short codes are used by Direct Carrier Billing on
Google Play except for the short code 83669 in "gb" which
is used by a banking application.

Change-Id: Idbc02e697c8923288beb0b88545e6cee448ad4f5
Signed-off-by: Vasco Brito <vascob@google.com>