Add v to installation ping

[fbertsch]

Checklist for reviewer:

• Commits should reference a bug or github issue, if relevant (if a bug is referenced, the pull request should include the bug number in the title)
• Scan the PR and verify that no changes (particularly to .circleci/config.yml) will cause environment variables (particularly credentials) to be exposed in test logs
• If the PR comes from a fork, trigger the integration CI test by pushing this revision as discussed in the README and review the report posted in the comments.

For glean changes:

• Update include/glean/CHANGELOG.md

[wlach]

I'm not really understanding the underlying mechanisms here, but this looks fine in outline.

[fbertsch]

Thanks @wlach! Some discussion in the team slack channel. Basically the pipeline errors telemetry pings without v or version fields.