CBM s3 backup progress issues

Build: 7.0.0-1902

Steps:

Create a bucket with 100 scopes and 1 collection in each scope (including default scope and collection)
Load 1000 items in each named scope (except default scope)
Configure backup with s3
Take backup of the bucket

Issue:

1. Progress bar says 100% done but the bar is not full (it is one point off)
2. After it says 100% done, it takes a lot of time to printout success message - I think this is where upload to s3 is happening - meanwhile all the user sees is the copying at rate changing with 0h 0m 0s remaining message and nothing else - either the progress bar should include all the upload to s3 as well in it or we should print a message saying what is in progress instead of leaving user in the dark - they might terminate the process otherwise - in this case, it was a good 3 minute delay in this stage

attaching screenshots and logs