Sometimes unit test for showProgress function fails if progress bar
was not finished before refreshing event occurs, so progress bar
prints to io.Writer its intermediate state (which is normal since
in regular terminal the output everytime overwrites by carriage
return), so expected and actual output become different. This PS
changes the concept of testing this function and adds the error
tracking of showProgress execution. Some other minor changes included.
Change-Id: I78b4fa9674d4412fa83c1e9320b686923cbe8084
Signed-off-by: Ruslan Aliev <raliev@mirantis.com>
cc46ae2ef4