Add missing wifi parameters to test configs

[michalpasztamobica]

Description

The point is to follow the configs as described in the documentation .

Pull request type

[ ] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Docs update
[x] Test update
[ ] Breaking change

Reviewers

@SeppoTakalo

[ciarmcom]

@michalpasztamobica, thank you for your changes.
@SeppoTakalo @ARMmbed/mbed-os-tools @ARMmbed/mbed-os-test @ARMmbed/mbed-os-ipcore @ARMmbed/mbed-os-maintainers please review.

[cmonr]

@michalpasztamobica What happens if WIFI_MAX_SCAN_SIZE is undefined? Wouldn't the json then be invalid?

[bridadan]

My feedback echos @SeppoTakalo

[michalpasztamobica]

@cmonr , @SeppoTakalo , you are right, I might have overinterpreted my task... PR amended to reflect your input, thanks for that.
@SeppoTakalo, before approving, please take a look into internal JIRA ticket ONME-4147 - it seems the task's goals have changed, but let's make sure we can close that JIRA with this PR...

[michalpasztamobica]

Noticed some missing network parameters documentation, so added that in a separate commit, but I think it's related enough to merge both in one PR.

[bridadan]

Thanks for the changes. The configuration values are up to the folks who maintain those, so if it works for you it works for me.

[michalpasztamobica]

To keep thos configs compileable out of the box I had to change this setting.
Otherwise we get:

[Error] NetworkInterfaceDefaults.cpp@86,0:  #20: identifier "NSAPI_SECURITY_WIFI_SECURITY" is undefined

[michalpasztamobica]

@VeijoPesonen , thanks for your feedback. I just pushed a commit with "Wi-Fi" written correctly :)

[cmonr]

The point is to follow the configs as described in the documentation .

🎉

[cmonr]

CI started

[mbed-ci]

Test run: SUCCESS

Summary: 12 of 12 test jobs passed
Build number : 1
Build artifacts