add diagnostic logging to create_job

[sastels]

Summary | Résumé

The api lambda is sometimes taking so long to run that the api gateway times out. This PR adds some logging to the culprit function to try to see where the time is being spent.

Related Issues | Cartes liées

• https://app.zenhub.com/workspaces/notify-planning-core-6411dfb7c95fb80014e0cab0/issues/gh/cds-snc/notification-planning-core/308

Test instructions | Instructions pour tester la modification

This has to be run in staging. After the logging is added, we'll upload a 50K file to the test template as described in the card.

Reviewer checklist | Liste de vérification du réviseur

• This PR does not break existing functionality.
• This PR does not violate GCNotify's privacy policies.
• This PR does not raise new security concerns. Refer to our GC Notify Risk Register document on our Google drive.
• This PR does not significantly alter performance.
• Additional required documentation resulting of these changes is covered (such as the README, setup instructions, a related ADR or the technical documentation).

⚠ If boxes cannot be checked off before merging the PR, they should be moved to the "Release Instructions" section with appropriate steps required to verify before release. For example, changes to celery code may require tests on staging to verify that performance has not been affected.

[jimleroyer]

Let's see what that gives.