Tests: Add test for defaults defined at project

Change-Id: I0cafdd1b97625ef8a49d04f59c92d12694eb90d2

tests/yamlparser/job_fixtures/project_defaults.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<project>
+  <actions/>
+  <description>&lt;!-- Managed by Jenkins Job Builder --&gt;</description>
+  <keepDependencies>false</keepDependencies>
+  <blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>
+  <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
+  <concurrentBuild>false</concurrentBuild>
+  <canRoam>true</canRoam>
+  <properties/>
+  <scm class="hudson.scm.NullSCM"/>
+  <builders>
+    <hudson.tasks.Shell>
+      <command>echo var=var-value
+</command>
+    </hudson.tasks.Shell>
+  </builders>
+  <publishers/>
+  <buildWrappers/>
+</project>

tests/yamlparser/job_fixtures/project_defaults.yaml

@@ -0,0 +1,17 @@
+# Defaults defined at project should be honored.
+
+- defaults:
+    name: custom-defaults
+    var: var-value
+
+- job-template:
+    name: sample-job
+    builders:
+      - shell: |
+          echo var={var}
+
+- project:
+    name: sample-project
+    defaults: custom-defaults
+    jobs:
+      - sample-job