Description:
Add tests for the following use cases:
Adding a new system property containing: whitespace and special characters via CLI (interactive/user mode and programmatic mode)

Example use case:

[standalone@localhost:9990 /] /system-property=test:add(value="w1 w2 $^w3* ")
{"outcome" => "success"}
[standalone@localhost:9990 /] /system-property=test:read-attribute(name=value)
{
    "outcome" => "success",
    "result" => "w1 w2 $^w3* "
}

Test plan:
Tests for all use cases described in Preview documentation / Public documentation