OC-10520 Knife-cloud should add data summary methods

@adamedx
Implemented changes for server show command.
It uses knife-cloud branch: https://github.com/ClogenyTechnologies/knife-cloud/tree/ameya-oc-10520-server-show
PBI ref -> https://tickets.corp.opscode.com/browse/OC-10520
Working on rspec tests.
Thanks.