Re-enable multiple gerrit connection test

Re-enable the test with multiple gerrits affecting the same projects.
Extends the test a bit as the last test never showed actual interaction
between the two builds.

Story: 2000773
Task: 3412
Change-Id: Ia8621ea481057cc7602dd01ef149b2ebfbf0aa58
diff --git a/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/playbooks/project-test1.yaml b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/playbooks/project-test1.yaml
new file mode 100644
index 0000000..f679dce
--- /dev/null
+++ b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/playbooks/project-test1.yaml
@@ -0,0 +1,2 @@
+- hosts: all
+  tasks: []
diff --git a/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/playbooks/project-test2.yaml b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/playbooks/project-test2.yaml
new file mode 100644
index 0000000..f679dce
--- /dev/null
+++ b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/playbooks/project-test2.yaml
@@ -0,0 +1,2 @@
+- hosts: all
+  tasks: []
diff --git a/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/zuul.yaml b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/zuul.yaml
new file mode 100644
index 0000000..302dfcf
--- /dev/null
+++ b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/common-config/zuul.yaml
@@ -0,0 +1,42 @@
+- pipeline:
+    name: review_check
+    manager: independent
+    source: review_gerrit
+    trigger:
+      review_gerrit:
+        - event: patchset-created
+    success:
+      review_gerrit:
+        verified: 1
+    failure:
+      review_gerrit:
+        verified: -1
+
+- pipeline:
+    name: another_check
+    manager: independent
+    source: another_gerrit
+    trigger:
+      another_gerrit:
+        - event: patchset-created
+    success:
+      another_gerrit:
+        verified: 1
+    failure:
+      another_gerrit:
+        verified: -1
+
+- job:
+    name: project-test1
+
+- job:
+    name: project-test2
+
+- project:
+    name: org/project1
+    review_check:
+      jobs:
+        - project-test1
+    another_check:
+      jobs:
+        - project-test2
diff --git a/tests/fixtures/config/zuul-connections-multiple-gerrits/git/org_project1/README b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/org_project1/README
new file mode 100644
index 0000000..9daeafb
--- /dev/null
+++ b/tests/fixtures/config/zuul-connections-multiple-gerrits/git/org_project1/README
@@ -0,0 +1 @@
+test
diff --git a/tests/fixtures/config/zuul-connections-multiple-gerrits/main.yaml b/tests/fixtures/config/zuul-connections-multiple-gerrits/main.yaml
new file mode 100644
index 0000000..730cc7e
--- /dev/null
+++ b/tests/fixtures/config/zuul-connections-multiple-gerrits/main.yaml
@@ -0,0 +1,6 @@
+- tenant:
+    name: tenant-one
+    source:
+      review_gerrit:
+        config-repos:
+          - common-config