Create configuration conversion script

The new sapbasis_agentil probe does no longer use the nimsoft configuration
format to store the probe configuration and has switched to json.

As a result we have to touch every util class and every provider to
acknowledge the new configuration format. But we also have to rewrite all
fixtures that we have created.

Create a simple script that will take a configuration file as input and
writes the new json format to stdout. This way we should be able to
convert all our fixtures to match the new format so we can acutally test
if all our providers comply with the new json configuration.
Add gitignore file

Keep vim swapfiles and otherfiles outside git
Change util classes to handle json config

The sapbasis_agenitl probe uses the json format for storing the
configuraiton. This means that we have to rewrite all util classes that
represent a landscape, system and template in the puppet world.

During the converstion agentil also renamed a few of their structure
- landscape is now called system
- system is now called connector
- user is now called user_profile

We currently use the old term to be backward compatible towards the
provider classes but this may change in the future
Use new rspec expect syntax
Merge branch 'agentil_json'

* agentil_json:
  Use new rspec expect syntax
  Change util classes to handle json config
  Add gitignore file
  Create configuration conversion script