get/hget: write required trailing newline
get/hget: write required trailing newline

Reviewed-on: https://code.launchpad.net/~pjdc/canonical-is-hockeypuck/+git/canonical-is-hockeypuck/+merge/371431
Reviewed-by: Joel Sing <7ca239bdbcd314d2bf90bce5a71ad53794699165@canonical.com>

cmars/hockeypuck,cmars/hockeypuck