Add free short codes for direct carrier billing and others

Whitelist free short code batch 2016 Q1 - Android Partner Engineering.
Short codes for Bahrain, Vietname and Slovakia are for Direct carrier
billing, USA and Brazil short codes are used by Google Allo and Italy
short code change is due to government regulation.

Test: manual - uploaded modified file onto test device and tested
sending sms to changed shortcodes to verify behaviour.

Bug: 30212667

Change-Id: If4fe0605d4ad5aafad9ce9b9670526d40ad88f45
Signed-off-by: Matthew Campbell <matthewca@google.com>