Replace ruby-debug19 with debugger for Ruby 1.9.3 support
Replace ruby-debug19 with debugger for Ruby 1.9.3 support

Change-Id: I32f7817af9844bc7db4b70f5c437d7b3133377ca
Reviewed-on: https://gerrit.causes.com/11464
Reviewed-by: Aiden Scandella <1faf1e8390cdac9204f160c35828cc423b7acd7b@causes.com>
Tested-by: Aiden Scandella <1faf1e8390cdac9204f160c35828cc423b7acd7b@causes.com>

batizhevsky/mock_redis,GearboxSoftware/mock_redis,anujdas/mock_redis,brigade/mock_redis,tsubery/mock_redis