Enable setting test arguments with '-args'

[dvelitchkov]

Test arguments are now correctly passed in. Users have to set their go.buildFlags, e.g.:

"go.buildFlags": [
        "-args",
        "-foo",
        "i_am_foo",
        "-bar",
        "i_am_bar"
    ]

[msftclas]

All CLA requirements met.

[dvelitchkov]

This is for #1534

[ramya-rao-a]

I tried the test code and flags you provided, but I get the below error
Am I missing something?

[dvelitchkov]

Sorry for the delay.
I think this PR should be closed - this was a bad idea. What I'm doing can be accomplished by setting VS code project debug settings, no need to mess with build flags.

[ramya-rao-a]

Can you update your solution in #1534 and close it as well?