feat: add copybara-base job

Change-Id: I0b5aa5b72d00612d3444cc714fb8ad1d983ace72
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 7cbf599..33046a5 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -24,3 +24,25 @@
     secrets:
       - name: s3_config
         secret: s3-secrets
+
+- job:
+    name: copybara-base
+    parent: base
+    description: |
+      Base job for jobs which deal with Copybara.
+
+      It sets up the git credentials for the Copybara bot.
+    pre-run:
+      - playbooks/copybara-base/pre.yaml
+    cleanup-run:
+      - playbooks/copybara-base/cleanup.yaml
+    roles:
+      - zuul: zuul/jobs
+    post-review: true
+    nodeset:
+      nodes:
+        - name: copybara
+          label: copybara
+    secrets:
+      - name: copybara_secrets
+        secret: copybara-secrets