The account info of Gerrit Labels isn't fetched unless the
DETAILED_ACCOUNTS parameter is added to the query:
https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html

This fixes the `canTest` result, setting it to true if either:
- The author is a Googler (was previously working as intended)
- The change has a Code-Review +1 or +2 from a Googler
- The change has a Presubmit-Ready +1 from a Googler

Change-Id: I5cd9881ad38a178fb5bbeb6e4aae4b5a18be9749
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/54948Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>