Updated Gainsight docker image to 2019.2.4 tag

Change-Id: Ief51bc2b2ba811c32f6f1d6602bb08f4cb78c4b9
Related-Bug: PROD-29379
Related-Bug: PROD-29378
diff --git a/defaults/docker_images.yml b/defaults/docker_images.yml
index 25f61c1..6f51d1f 100644
--- a/defaults/docker_images.yml
+++ b/defaults/docker_images.yml
@@ -31,7 +31,7 @@
     docker_image_grafana: "${_param:mcp_docker_registry}/openstack-docker/grafana:${_param:mcp_version}"
     docker_image_prometheus_es_exporter: "${_param:mcp_docker_registry}/openstack-docker/prometheus-es-exporter:0.5.1-mcp0"
     docker_image_prometheus: "${_param:mcp_docker_registry}/openstack-docker/prometheus:${_param:mcp_version}"
-    docker_image_prometheus_gainsight: "${_param:mcp_docker_registry}/openstack-docker/gainsight:2019.2.3"
+    docker_image_prometheus_gainsight: "${_param:mcp_docker_registry}/openstack-docker/gainsight:2019.2.4"
     docker_image_prometheus_gainsight_elasticsearch: "${_param:mcp_docker_registry}/openstack-docker/gainsight_elasticsearch:${_param:mcp_version}"
     docker_image_prometheus_relay: "${_param:mcp_docker_registry}/openstack-docker/prometheus_relay:${_param:mcp_version}"
     docker_image_pushgateway: "${_param:mcp_docker_registry}/openstack-docker/pushgateway:${_param:mcp_version}"