Make sure integration-cli test clean up

Common patterns:
- Multiple images were built with same name but only one cleanup.
- Containers were deleted after images.
- Images not removed after retagging.

Signed-off-by: Tõnis Tiigi <tonistiigi@gmail.com> (github: tonistiigi)
Fix deleteImages() helper for multiple names

Pass every image name as separate argument.

Signed-off-by: Tõnis Tiigi <tonistiigi@gmail.com> (github: tonistiigi)