bug 1043921: adjust e-mail for update_shipping builder to be more intelligible. r=nthomas

--HG--
branch : production
extra : transplant_source : %F7%D6%BDJ%F4%D1%0F6%B9%A6.Q%7C%A8%A7a%C6%91%87%02
bug 986990: Modify test channel names to support releases on Balrog - switch to new test channel variables. r=nthomas

--HG--
branch : production
extra : transplant_source : vtNp4%C7%F1%13%A2%B7%8F%F9%2At%A1%F49%81%A3F