Fix a typo introduced at PR#947 and add a new test to verify it#1019

TheRealFalcon merged 2 commits into

canonical:maincanonical/cloud-init:mainfrom

PengpengSun:PengpengSun-OVF-Correct-a-typoPengpengSun/cloud-init:PengpengSun-OVF-Correct-a-typoCopy head branch name to clipboard