Specified the locale in setupIntl()

[ijlee2]

In ember-intl@v7, the test helper setupIntl() requires end-developers to specify a locale. I updated the blueprint file for tests/helpers/index.ts to reflect this breaking change.

Note

The change to tests/helpers/index.ts is backward-compatible, because specifying the locale is optional in earlier versions of ember-intl.

Two possible alternatives:

1. Remove the commented line from setupApplicationTest(), because the test helper setupIntl() is really meant to help end-developers write rendering and unit tests.
2. Move the commented line to setupRenderingTest(), in case an end-developer wants an example of calling a function (e.g. setupIntl()) in all or most rendering tests.

[ef4]

I think the test failures here are caused by an ember-data beta release problem that has been fixed, not sure if it's been released.

This PR seems fine and should merge whenever we can get CI green again. We do need to confirm that no tests are failing just because of the blueprint changes.

[kategengler]

@ijlee2 Can you try rebasing to see if that fixes CI?

[ijlee2]

@kategengler Thanks for letting me know. The branch had already been rebased, after which CI had failed, so I cherry-picked the commit to re-trigger CI just now.

[kategengler]

I'm happy to merge now but do you want to retarget to beta so it makes it into 5.10?

[ijlee2]

I rebased the branch against v5.10.0-beta.0 and changed the target branch to beta. I hope it's right; if not, feel free to change the pull request, as I'll be out for several days. Thanks.