Fix: Make module.run state to display False mret also

Before the change, this
```
mine.send:
  module.run:
    - func: network.ip_add
```
returns
```
hostname:
----------
          ID: mine.send
    Function: module.run
      Result: True
     Comment: Module function mine.send executed
     Changes: 
```

To me it is a bug that failed execution is not visible in any way. We have two options
1. either make state to fail or
2. return False in `Changes:` in the same way as True is returned in a succesfull case.

I implemented the option 2. because in some sense module execution succeeds, but returned value is False. 
After the change state returns
```
hostname:
----------
          ID: mine.send
    Function: module.run
      Result: True
     Comment: Module function mine.send executed
     Changes:   
              ----------
              ret:
                  False
```

I'm okay with the option 1. also.