Set tests to expect ngas_ingest to be false

apps/cli/executables/pexable/ingest_envoy/test/examples/Manifest_VLASS_QUICKLOOK.json

 {
   "parameters": {
     "reingest": false,
-    "ngas_ingest": true,
+    "ngas_ingest": false,
     "telescope": "EVLA",
     "ingestion_path": "/lustre/aoc/cluster/pipeline/dsoc-prod/stage_products/VLASS2.1.ql.T08t09.J055438-113000.10.2048.v1",
     "additional_metadata": "image_metadata_2021_05_21_T10_17_19.180.json"

apps/cli/executables/pexable/ingest_envoy/test/examples/evla_cal_final_manifest.json

 {
   "parameters": {
     "reingest": false,
-    "ngas_ingest": true,
+    "ngas_ingest": false,
     "telescope": "EVLA",
     "ingestion_path": "/lustre/aoc/cluster/pipeline/dsoc-prod/stage_products/20A-346_2021_07_23_T13_37_08.376"
   },

apps/cli/executables/pexable/ingest_envoy/test/examples/evla_cal_manifest_2021-08-02.json

 {
   "parameters": {
     "reingest": false,
-    "ngas_ingest": true,
+    "ngas_ingest": false,
     "telescope": "EVLA",
     "ingestion_path": "/lustre/aoc/cluster/pipeline/dsoc-prod/stage_products/20A-346_2021_07_23_T13_37_08.376"
   },

apps/cli/executables/pexable/ingest_envoy/test/examples/image_manifest_tmpx_ratuqh.json

@@ -2,7 +2,7 @@
   "parameters": {
     "telescope": "EVLA",
     "reingest": "false",
-    "ngas_ingest": "true",
+    "ngas_ingest": "false",
     "ingestion_path": "/lustre/aoc/cluster/pipeline/dsoc-dev/workspaces/staging/tmpx_ratuqh",
     "calibrate": "false",
     "additional_metadata": "aux_image_metadata.json"