Milkcheck should advise the user

[wilfriedroset]

When somes targets are failed after a run of Milkcheck, the user need the report/summary of the command and then he has to decide what to do. Milkcheck should provide a feature allowing the user to define a comment for each comment. This comment would be displayed to the user when a target is failed.

services:
    svc1:
        desc: verify %SERVICE
        target: "node[1-10]"
        actions:
            status:
                cmd: service %SERVICE status
                fix: service %SERVICE start

Let's say that node[2,7] doesn't have svc1 running, Milkcheck would display the advice:

--8<--
 SUMMARY - 1 action (1 failed)
 + svc1.status                                                          
        svc1 NOK, try clush -bw node[2,7] service svc1 start

If we were pushing the idea a little bit further, Milkcheck should provide an option (let's say --fixup). This option should execute automatically execute all fixes right after the check:

1. service %SERVICE status (not running)
2. service %SERVICE start (ok)
3. service %SERVICE status (runnig)

If, after the fix was executed the service is still in error, milkcheck should set the target/service as failed.