Add webservice.parse_config test

Description

This PR adds a test for webservice.parse_config.

The test is currently failing, as I observed that dictionary keys and values keep their spaces when converted to arguments.
I think that keys should have their space replaced with - and values should be surrounded by double-quotes, as is commonly used in bash.

This is up for debate, as these are not scenarios that occur in our usage.

How Has This Been Tested?

CI

Types of changes

Checklist:

• My code follows the code style of this project.

• I have updated the documentation accordingly.

Reviewers

@hammerd @ahmedk @roscar