Move the responsibility for aligning progress bars into createProgressBar
Move the responsibility for aligning progress bars into createProgressBar

... instead of the callers hard-coding the knowledge what the various options
are and how to adjust shortDigest in coordination with the other caller,
let createProgressBar worry about it.

Should not, ultimately, change behavior.

Signed-off-by: Miloslav Trmač <9c008e38982a5397deb855345fb164f0558459ae@redhat.com>

containers/image,containers/image