WS-3239 Random ingest_envoy fixes

See merge request !1918

WS-3239 EVLA SDM ingest_obs

See merge request !1916

No story: ingest_envoy fixes for EVLA SDM ingestion

See merge request !1909

update trigger_ingest to search logs in real-time

See merge request !1915

Changed it so the ingestion artifacts tar is now getting written in the EB's directory within the `/lustre/.../workspaces/staging` directory.

Updated trigger_ingest's subprocess.call run to not write out the stdout and stderr to sys.stdout and sys.stderr, respectively

WS-3263: Getting ingest-produced SPLs for curator (ingest_envoy work, part 2)

See merge request !1907

Modified the IngestObservationLauncher.launch method to log out the failed curator SPLs instead of changing the ingest return code

WS-3249: ingest_envoy EVLA EB updates (Part 1)

See merge request !1906

Ensured test methods for the CuratorLauncher and IngestObservationLauncher were accurate and complete

Fixed a condition value (IngestObservationLauncher now only launched curator if ingestion succeeded)