[MCC-262896] allow 1/0 as values in the X-B3-Sampled header

[bvillanueva-mdsol]

allow 1/0 as values in the X-B3-Sampled header.
Please review and merge.
@kenyamat @hkurniawan-mdsol @jcarres-mdsol

Thanks!
Brent

[h-kurniawan]

Maybe TryParseBool can be simplified like below.

private bool TryParseToBool(string stringValue)
{
    if (string.IsNullOrWhiteSpace(stringValue)) return false;

    switch (stringValue.ToLower())
    {
        case "1":
        case "true":
            return true;
        default:
            return false;
    }
}

[bvillanueva-mdsol]

The requirement for this is it needs to check if stringValue is a valid bool value.
If it is a valid bool value (true/false/1/0) then it would use that value.
If not, then it needs to do some calculation using the sample rate to get a bool value. Please checkout ShouldBeSampled() method at line 52

[h-kurniawan]

Gotcha!
Thanks for the explanation.

[bvillanueva-mdsol]

@hkurniawan-mdsol Refactored method to not use context and use list scenarios for unit test
e9e8481 Please check, Thanks!

[h-kurniawan]

LGTM.

And since this is rather urgent and there's only me today so I'll merge it.