Fix ini_manage state - equality detection for non-string values

The verification if the change is needed in ini_manage fails with non-string values. This will trigger change every time the state is called.

This example will trigger state change for every call:
```yaml
/some/ini/file:
  ini.options_present:
    - sections:
      DEFAULT_IMPLICIT:
          string_value_is_fine: abcd
          number_is_not_good: 9091
```

The workaround is to make all values string in the yaml. For the above example it would be:
```yaml
/some/ini/file:
  ini.options_present:
    - sections:
      DEFAULT_IMPLICIT:
          string_value_is_fine: abcd
          number_is_not_good: '9091'
```