project-lakitu:app-admin/stackdriver: update stackdriver-logging-agent

This change updates the stackdriver-logging-agent container from 1.5.33
to 1.8.4.

BUG=b/175266193
TEST=presubmit, validation stackdriver_e2e_test
RELEASE_NOTE=Updated stackdriver-logging-agent to 1.8.4

Change-Id: I13fb0d0c46ee29321dbb4908a9a081893d648882
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/9720
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
diff --git a/project-lakitu/app-admin/stackdriver/files/env_vars b/project-lakitu/app-admin/stackdriver/files/env_vars
index 12bfbe1..158f61b 100644
--- a/project-lakitu/app-admin/stackdriver/files/env_vars
+++ b/project-lakitu/app-admin/stackdriver/files/env_vars
@@ -7,5 +7,5 @@
 METADATA_AGENT_DOCKER_IMAGE="gcr.io/stackdriver-agents/stackdriver-metadata-agent:0.2-0.0.17-2"
 METADATA_AGENT_NAME="stackdriver-metadata-agent"
 
-LOGGING_AGENT_DOCKER_IMAGE="gcr.io/stackdriver-agents/stackdriver-logging-agent:0.2-1.5.33-1-1"
+LOGGING_AGENT_DOCKER_IMAGE="gcr.io/stackdriver-agents/stackdriver-logging-agent:1.8.4"
 LOGGING_AGENT_NAME="stackdriver-logging-agent"
diff --git a/project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r18.ebuild b/project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r19.ebuild
similarity index 100%
rename from project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r18.ebuild
rename to project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r19.ebuild