Remove project3

This is used by two tests; move those to a new simple_layout.

Change-Id: I72c740dcc11d29736f2db74cda11e9e3092209bb
diff --git a/tests/fixtures/config/single-tenant/git/common-config/zuul.yaml b/tests/fixtures/config/single-tenant/git/common-config/zuul.yaml
index a7d99df..34bd9cd 100644
--- a/tests/fixtures/config/single-tenant/git/common-config/zuul.yaml
+++ b/tests/fixtures/config/single-tenant/git/common-config/zuul.yaml
@@ -141,28 +141,3 @@
             dependencies: project-merge
         - project1-project2-integration:
             dependencies: project-merge
-
-- project:
-    name: org/project3
-    check:
-      jobs:
-        - project-merge
-        - project-test1:
-            dependencies: project-merge
-        - project-test2:
-            dependencies: project-merge
-        - project1-project2-integration:
-            dependencies: project-merge
-    gate:
-      queue: integrated
-      jobs:
-        - project-merge
-        - project-test1:
-            dependencies: project-merge
-        - project-test2:
-            dependencies: project-merge
-        - project1-project2-integration:
-            dependencies: project-merge
-    post:
-      jobs:
-        - project-post
diff --git a/tests/fixtures/config/single-tenant/main.yaml b/tests/fixtures/config/single-tenant/main.yaml
index 919921e..83ed092 100644
--- a/tests/fixtures/config/single-tenant/main.yaml
+++ b/tests/fixtures/config/single-tenant/main.yaml
@@ -8,4 +8,3 @@
           - org/project
           - org/project1
           - org/project2
-          - org/project3
diff --git a/tests/fixtures/layouts/three-projects.yaml b/tests/fixtures/layouts/three-projects.yaml
new file mode 100644
index 0000000..5d10276
--- /dev/null
+++ b/tests/fixtures/layouts/three-projects.yaml
@@ -0,0 +1,112 @@
+- pipeline:
+    name: check
+    manager: independent
+    trigger:
+      gerrit:
+        - event: patchset-created
+    success:
+      gerrit:
+        verified: 1
+    failure:
+      gerrit:
+        verified: -1
+
+- pipeline:
+    name: gate
+    manager: dependent
+    success-message: Build succeeded (gate).
+    trigger:
+      gerrit:
+        - event: comment-added
+          approval:
+            - approved: 1
+    success:
+      gerrit:
+        verified: 2
+        submit: true
+    failure:
+      gerrit:
+        verified: -2
+    start:
+      gerrit:
+        verified: 0
+    precedence: high
+
+- job:
+    name: project-merge
+    hold-following-changes: true
+
+- job:
+    name: project-test1
+
+- job:
+    name: project-test2
+
+- job:
+    name: project1-project2-integration
+
+- project:
+    name: org/project1
+    check:
+      jobs:
+        - project-merge
+        - project-test1:
+            dependencies: project-merge
+        - project-test2:
+            dependencies: project-merge
+        - project1-project2-integration:
+            dependencies: project-merge
+    gate:
+      queue: integrated
+      jobs:
+        - project-merge
+        - project-test1:
+            dependencies: project-merge
+        - project-test2:
+            dependencies: project-merge
+        - project1-project2-integration:
+            dependencies: project-merge
+
+- project:
+    name: org/project2
+    check:
+      jobs:
+        - project-merge
+        - project-test1:
+            dependencies: project-merge
+        - project-test2:
+            dependencies: project-merge
+        - project1-project2-integration:
+            dependencies: project-merge
+    gate:
+      queue: integrated
+      jobs:
+        - project-merge
+        - project-test1:
+            dependencies: project-merge
+        - project-test2:
+            dependencies: project-merge
+        - project1-project2-integration:
+            dependencies: project-merge
+
+- project:
+    name: org/project3
+    check:
+      jobs:
+        - project-merge
+        - project-test1:
+            dependencies: project-merge
+        - project-test2:
+            dependencies: project-merge
+        - project1-project2-integration:
+            dependencies: project-merge
+    gate:
+      queue: integrated
+      jobs:
+        - project-merge
+        - project-test1:
+            dependencies: project-merge
+        - project-test2:
+            dependencies: project-merge
+        - project1-project2-integration:
+            dependencies: project-merge