ResultSerializer: update summary formatting

There are two updates to summary formating in this commit:
* shorten the alignment of command types to -9 from -14 the reason is
* that the longes command type is now 'ctl_wait' instead of
* 'system_config'

* add machine identification to each command in the format:
* 'machine id: cmd_type'

Signed-off-by: Ondrej Lichtner <olichtne@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>