Tests: Use job-template instead of job for duplicate tests

In new expander implementation, job entries inside projects are just
ignored.

Change-Id: I4576bc720cef159a549944b5d7638e40ef430299

tests/duplicates/fixtures/exception_projects001.yaml

@@ -6,7 +6,7 @@
         - 'duplicates002_1.1'
         - 'duplicates002_1.1'
 
-- job:
+- job-template:
     name: duplicates002_1.1
     scm:
       - git:

tests/duplicates/fixtures/exception_projects002.yaml

@@ -9,5 +9,5 @@
     jobs:
       - dummy-job
 
-- job:
+- job-template:
     name: dummy-job