fix variable name for trigger

.gitlab-ci.yml

@@ -160,7 +160,7 @@ Trigger nshmp-webapps:
         --form ref=${REF} \
         --form "variables[description]=Triggered by nshmp-netcdf" \
         --form "variables[ENVIRONMENT]=${ENVIRONMENT}" \
-        --form "variables[NSHMP_APPS_IMAGE]=${IMAGE_NAME}" \
+        --form "variables[NSHMP_NETCDF_CONUS_2018_IMAGE]=${IMAGE_NAME}" \
         --form "variables[TRIGGER_PASSCODE]=${NSHMP_WEBAPPS_CDK_TRIGGER_TOKEN}" \
         "https://${PRIVATE_GITLAB}/api/v4/projects/${NSHMP_WEBAPPS_CDK_PROJECT_ID}/trigger/pipeline"
   stage: trigger