MB-3028 Improve error text for illegal packets
MB-3028 Improve error text for illegal packets

Change-Id: Id42bc6c53c25c3cee3f28c30d53e5354db8c349a
Reviewed-on: http://review.membase.org/3892
Tested-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>
Reviewed-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>

zbase/vbucketmigrator,membase/vbucketmigrator,membase/vbucketmigrator,membase/vbucketmigrator,zbase/vbucketmigrator,membase/vbucketmigrator,zbase/vbucketmigrator,zbase/vbucketmigrator