MB-11649: remove klog stats from cbcollect_info

Because associated mutation key log feature was dropped from
ep-engine and this stat doesn't work anymore.

Change-Id: I620d3a8d459090173eac2ca02b53c7c9fb1e85a7
Reviewed-on: http://review.couchbase.org/39167
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
increase verboseness of "unable to listen" error messages

Particularly we dump address we tried to listen on to check for
possible flapping dns setup.

Change-Id: Ie7df0c5bc3ee8d9ab3df3f4dc3d2b4f1add061c5
Reviewed-on: http://review.couchbase.org/39169
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>