Remove 'auth' dict from jobs

The only thing left in it is the list of secrets; just put that
on the job itself.

Change-Id: I36fb0fe1658de5b776f4843432f1c9965379a2ea
diff --git a/tests/unit/test_model.py b/tests/unit/test_model.py
index 00f2592..9cc7195 100644
--- a/tests/unit/test_model.py
+++ b/tests/unit/test_model.py
@@ -410,11 +410,9 @@
                 'name': 'trusted-secrets',
                 'parent': 'base',
                 'timeout': 40,
-                'auth': {
-                    'secrets': [
-                        'trusted-secret',
-                    ]
-                }
+                'secrets': [
+                    'trusted-secret',
+                ]
             })
         layout.addJob(trusted_secrets_job)
         untrusted_secrets_job = configloader.JobParser.fromYaml(
@@ -424,11 +422,9 @@
                 'name': 'untrusted-secrets',
                 'parent': 'base',
                 'timeout': 40,
-                'auth': {
-                    'secrets': [
-                        'untrusted-secret',
-                    ]
-                }
+                'secrets': [
+                    'untrusted-secret',
+                ]
             })
         layout.addJob(untrusted_secrets_job)
         trusted_secrets_trusted_child_job = configloader.JobParser.fromYaml(