health check should check redis too

[codl]

i believe /api/health_check only checks that postgres is alive and well. earlier today redis ran out of disk space and stopped accepting writes. that should have made the health check fail

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.