message: Update submodule format
diff: [submodule "terram-protos"]
  path = terram-protos
  - url = http://github.com/xpring-eng/terram-protos
  + url = git@github.com:xpring-eng/terram-protos.git
  branch = master
  [submodule "terram"]
  path = terram
  - url = http://github.com/xpring-eng/terram
  + url = git@github.com:xpring-eng/terram.git
  