Allow customization of testsuite name attribute

[stweedie]

I added the ability to customize the testsuite name attribute using a suiteNameFormatter function. The default behavior of this setting (if no function is passed) is to use the browser's name, which is what is currently being done.

The context for this is in VSTS, test results have to be in one of a very limited set of formats, including JUnit. They pull in the name attribute on the testsuite to identify the tests. Without being able to customize suite name, the results look like this:

[googlebot]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project (if not, look below for help). Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please visit https://cla.developers.google.com/ to sign.

Once you've signed (or fixed any issues), please reply here with @googlebot I signed it!) and we'll verify it.

---

What to do if you already signed the CLA

Individual signers

• It's possible we don't have your GitHub username or you're using a different email address on your commit. Check your existing CLA data and verify that your email is set on your git commits.

Corporate signers

• Your company has a Point of Contact who decides which employees are authorized to participate. Ask your POC to be added to the group of authorized contributors. If you don't know who your Point of Contact is, direct the Google project maintainer to go/cla#troubleshoot (Public version).
• The email used to register you as an authorized contributor must be the email used for the Git commit. Check your existing CLA data and verify that your email is set on your git commits.
• The email used to register you as an authorized contributor must also be attached to your GitHub account.

ℹ️ Googlers: Go here for more info.

[stweedie]

@googlebot I signed it!

[googlebot]

CLAs look good, thanks!

ℹ️ Googlers: Go here for more info.

[SamH95]

Hi, whats the status on this? I would really appreciate a feature like this.

Regards
Sam

[glenn222]

Hello, any update on this? This is a really nice feature to have in test reporting.

[testifyqa]

is anyone able to merge this please?

[jginsburgn]

Thanks for pinging! Let me take a look shortly.

[doblinger-extron]

Any updates?

[ZenwalkerD]

Any body pushing this PR ? no updates on this for long time.

[jginsburgn]

PRs are currently blocked by: #190. I hope it can be resolved soon!

[patrickhuy]

Hey @jginsburgn any updates on this? Would it help to get this merged and released if one were to help out on #190? Do you have requirements on what you want for #190?