Fix self hosted cloud image pull error for plugin db updater Job (#2026)

Summary: Fix self hosted cloud image pull error for plugin db updater
Job

During the 0.1.8 cloud prerelease testing, I noticed that the plugin db
updater Job hits an image pull error. This was something that was also
reported in the Community slack for the latest release (0.1.7).

Relevant Issues: N/A

Type of change: /kind bugfix

Test Plan: The Job is successfully created without any additional
manifest edits

Changelog Message: Fixed an issue where the self-hosted cloud install
hit an image pull error for the plugin db updater Job

Signed-off-by: Dom Del Nano <ddelnano@gmail.com>

Author: ddelnano

k8s/cloud/public/kustomization.yaml

@@ -46,6 +46,6 @@ images:
 - name: cloud-vzmgr_server_image
   newName: gcr.io/pixie-oss/pixie-prod/cloud-vzmgr_server_image
   newTag: latest
-- name: cloud-plugin/load_db
-  newName: gcr.io/pixie-oss/pixie-prod/cloud-plugin/load_db
+- name: cloud-plugin-load_db
+  newName: gcr.io/pixie-oss/pixie-prod/cloud-plugin-load_db
   newTag: latest