Code review comment for ~raharper/curtin:fix/multiple-carry-over-param-separators

Commit message lints:
- Line #3 has 3 too many characters. Line starts with: "separator. vmtest baseclass"...- Line #4 has 1 too many characters. Line starts with: "grub refactor, the python"...- Line #5 has 1 too many characters. Line starts with: "the additional '---'."...