project-lakitu: update stackdriver logging agent

This updates the agent container to 1.9.4.

BUG=b/213609393
TEST=presubmit,validation tests
RELEASE_NOTE=Updated stackdriver logging agent to 1.9.4

Change-Id: Ic0bb73bd15a059056911c895256b76dc66b02684
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/27560
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Roy Yang <royyang@google.com>
diff --git a/project-lakitu/app-admin/stackdriver/files/env_vars b/project-lakitu/app-admin/stackdriver/files/env_vars
index bea5b00..d5e1923 100644
--- a/project-lakitu/app-admin/stackdriver/files/env_vars
+++ b/project-lakitu/app-admin/stackdriver/files/env_vars
@@ -2,5 +2,5 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-LOGGING_AGENT_DOCKER_IMAGE="gcr.io/stackdriver-agents/stackdriver-logging-agent:1.8.9"
+LOGGING_AGENT_DOCKER_IMAGE="gcr.io/stackdriver-agents/stackdriver-logging-agent:1.9.4"
 LOGGING_AGENT_NAME="stackdriver-logging-agent"
diff --git a/project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r26.ebuild b/project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r27.ebuild
similarity index 100%
rename from project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r26.ebuild
rename to project-lakitu/app-admin/stackdriver/stackdriver-0.0.1-r27.ebuild