Option to save individual deployment results to file

[jheiss]

Currently we report the results of deployment to specific hosts by displaying a ruby data structure at the end of the deployment process:

% tpkg -s bogushost,realhost --qa

Exit statuses:
{"realhost"=>0, "bogushost1"=>1}

Users have pointed out that this is not ideal. If they want to access the individual status programmatically they have to parse the output, find this data structure, and read it back in via ruby. It would be much more convenient if we had an option to save individual status to a file, particularly in a more generic format like yaml.

Was: https://sourceforge.net/apps/trac/tpkg/ticket/32