[cbcollect_info] use cbstats instead of mbstats. MB-5272
[cbcollect_info] use cbstats instead of mbstats. MB-5272

Change-Id: Id7acd48e55a034ae7175c9980a0dfde5953e76b5
Reviewed-on: http://review.couchbase.org/15816
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

nimishzynga/ns_server,vzasade/ns_server,membase/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,ceejatec/ns_server,daverigby/ns_server,daverigby/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,ceejatec/ns_server,nimishzynga/ns_server,membase/ns_server,membase/ns_server,membase/ns_server,membase/ns_server,membase/ns_server,daverigby/ns_server,mschoch/ns_server,vzasade/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,ceejatec/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,ceejatec/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,ceejatec/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server