MB-11449: implemented progress report for cluster cbcollect_info

Change-Id: I96bccbda50c889b32c6d4226709729e5cb785874
Reviewed-on: http://review.couchbase.org/38607
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Artem Stemkovski <artem@couchbase.com>