sort output for ExampleServicedCLI_CmdServiceRun_list

ISSUE:
```
~/src/europa/src/golang/src/github.com/control-center/serviced/cli/cmd
# plu@plu-9: go test
--- FAIL: ExampleServicedCLI_CmdServiceRun_list (2.62724ms)
got:
goodbye
hello
want:
hello
goodbye
FAIL
exit status 1
FAIL	github.com/control-center/serviced/cli/cmd	0.417s
```

DEMO - no errors:
```
~/src/europa/src/golang/src/github.com/control-center/serviced/cli/cmd
# plu@plu-9: go testPASS
ok  	github.com/control-center/serviced/cli/cmd	0.462s
```