CI: Use docker creds from ci/common (#104827)

Use docker creds from ci/common

(cherry picked from commit fd4afdbd2c)

.drone.yml

@@ -5503,13 +5503,13 @@ name: prerelease_bucket
 ---
 get:
   name: username
-  path: infra/data/ci/grafanaci-docker-hub
+  path: ci/data/common/dockerhub
 kind: secret
 name: docker_username
 ---
 get:
   name: password
-  path: infra/data/ci/grafanaci-docker-hub
+  path: ci/data/common/dockerhub
 kind: secret
 name: docker_password
 ---
@@ -5640,6 +5640,6 @@ kind: secret
 name: gcr_credentials
 ---
 kind: signature
-hmac: a92fdb0659c429ead489860ee89cd2b27870e6cf9f39e093fcfad21f09ce3e78
+hmac: f0da71ffaa44671a6c0666891461ea51386f1c5c6b3b0c8bda1c056fdb501989
 
 ...

scripts/drone/vault.star

@@ -55,8 +55,8 @@ def secrets():
         vault_secret(gar_pull_secret, "secret/data/common/gar", ".dockerconfigjson"),
         vault_secret(drone_token, "infra/data/ci/drone", "machine-user-token"),
         vault_secret(prerelease_bucket, "infra/data/ci/grafana/prerelease", "bucket"),
-        vault_secret(docker_username, "infra/data/ci/grafanaci-docker-hub", "username"),
-        vault_secret(docker_password, "infra/data/ci/grafanaci-docker-hub", "password"),
+        vault_secret(docker_username, "ci/data/common/dockerhub", "username"),
+        vault_secret(docker_password, "ci/data/common/dockerhub", "password"),
         vault_secret(
             gcp_upload_artifacts_key,
             "infra/data/ci/grafana/releng/artifacts-uploader-service-account",