Merge pull request #10 from crowbar/release/pebbles/master

Release/pebbles/master
Update service_object.rb

Removing "-i" option from sudo command in order to get rid of "stdin: is not tty" warning (this warning is harmless but messing up parsing of xml file with tempest run results)
Update service_object.rb

Minor typos fixed
Merge pull request #645 from MirantisDellCrowbar/BUG/DCB-159/release/pebbles/master

Bug/dcb 159/release/pebbles/master