feat: add copybara-base job

Change-Id: I0b5aa5b72d00612d3444cc714fb8ad1d983ace72
diff --git a/zuul.d/secrets.yaml b/zuul.d/secrets.yaml
index 25f6ab0..898ade6 100644
--- a/zuul.d/secrets.yaml
+++ b/zuul.d/secrets.yaml
@@ -25,3 +25,17 @@
           IV9hhvv5NJNTrRenfhlhGOBM9S+94Lq/98cLPWuNKnW0i7w4UAUNxaYNcJQtphYNiETB2
           i8uo8RuQGMO4CJDEnI9F0zvz5cPJAJFvbn2LkoX7l/qWOp1091YXxBbVT7WvHi0rgJcie
           Hsde2UkizxiH+JpA0N8hxSNbVjp+chJoudlg1l3GgJYct/0w+phCEkhcJ24bGw=
+- secret:
+    name: copybara-secrets
+    data:
+      git_credentials: !encrypted/pkcs1-oaep
+        - gIbfXTRcXuReYBeSr6hryH+0vQPrkoFkLwNEwnfRDlMWmYRyU61yxn4Yw1CuEzBvwtw9G
+          SqN0rl+unuPNXB7sUqRwupKp9kNfcEGeWBJMTpWnObvu43uI4y21y4PjCrKCiPA2QuKCf
+          ZO9uri3j4mlO7L5IU2aCr4MZEBK3zLeWl5RvWVTjaOwFDZ07au+2BPH1QOMwjuHmfGIUw
+          c47GzddYCtXhVBT8Uy8Uh1mNMrqEg3pPqw+LtPGAm4rhXNUw2VB88XrjJxUtbkglk55WG
+          OsSgN0PSNNc4F8Wb4wchnQVzf8ghAfsKutMCCV9yQAAx0k9iEAY0RuWEcCJ2rv7jSCM4+
+          C1R0G4U5NjAvBFV1HjwwEu1EJTX5moaq7zcaORRdaja+FdXoZ+kOZLMpJHMH/rX2GnDU+
+          6yGzbtobiit6uiEEh36QRoYYGrZejB/0oyrnoayO2rzT71tyLeJ0dRiKoubOYZc+Bfxuz
+          2vL+W6wmwZKALZ9LRNYpix17PuSxvXl+eWQ/n2Nq4/nQZpXGg4jLUrEbOBKTqH4bvxPaR
+          5YUN6wxPV41OkxpqnKhiwxLej7Idicwx8/jB6Qk2NAkYKWH5DteRuEwIOqDiv5oz4RP7Q
+          LS+5yjW25TmhpSdEpmOva3qC2YB0L2NcqbpV4QpsbiRcFDfdCJDgrHZJscq2gA=