Bugfixes
- Handle cases where the source was removed from the service configuration but it was still queued (https://github.com/CybercentreCanada/assemblyline/issues/296)
- Define environment variables to control shard/replica count for metrics (https://github.com/CybercentreCanada/assemblyline/issues/162)
- Assign a name to exposed ports to support multi-port services (https://github.com/CybercentreCanada/assemblyline/issues/279)