A new test to test JSON and arrays

[teunisnl]

We would like to start chrome with args/extenions; both expect a list of strings
This works:

|script|list fixture   |
|add   |start-maximized|
|$args=|copy list      |

|script         |map fixture   |
|set value      |$args|for|args|
|$chromeoptions=|copy map      |

|script          |selenium driver setup             |
|start driver for|chrome|with profile|$chromeoptions|
|show            |driver description                |

but it does not work using json -DseleniumJsonCapabilities="{\"browserName\":\"chrome\", \"chromeOptions\":{\"args\":[\"start-maximized\"]}}"

Tried it with the use of Gson then it works fine; (included in this pull request)
Maby you can fix your parser for the new test so gson isn't needed