Allow to add +auto.master in auto.master file

[erobhal]

Pull Request (PR) description

Allows inclusion of +auto.master in /etc/auto.master by adding this to the 'mapfiles' property:

"/etc/auto.master":
    mappings:
    - key: "+"
      fs: "auto.master"

This Pull Request (PR) fixes the following issues

[kenyon]

It looks like the only reason you can't do this with the current implementation is that you can't have whitespace between the + and the map name. Is that right?

[erobhal]

That is correct

[bastelfreak]

@erobhal thanks for the PR. can you maybe add a unit test for the change to verify the created file? Do you think this is a breaking change?

[erobhal]

@bastelfreak Been a while since I coded puppet modules and I have never used puppet acceptance tests, so not sure how to do that. The change should not affect mappings not using a plus sign as key so I can't see that it would break anything.

[erobhal]

@bastelfreak Have included acceptance test now. I hope I figured it out. Looks ok in the testlogs as far as I can tell.

[bastelfreak]

thanks for the work!