Restore Upgrade Test Scenario2 by creating resources

Scenario 2 of the upgrade test aims to install pipeline server from the
preivous release, create resources from that version and test on those
resources against the client of the current release.

This commit restores the resources creation of simple Task and Pipeline
resources to enable the 2nd scenario of the upgrade test to work by
applying the resources from the old server version of pipeline. It was
preivously renamed and removed in tektoncd#2685.

It fixes the missing piece where the required resources from the previous
release have not been created to accomplish scenario 2 of the upgrade
test. More specifically, it creates a simple Task and Pipeline resources
and then runs the two simple resources with a TaskRun and PipelineRun
created after upgrading to the current version and verify that they both
run successfully.

/kind misc
Closes tektoncd#6868

test/e2e-tests-upgrade.sh

@@ -66,17 +66,29 @@ uninstall_pipeline_crd_version $PREVIOUS_PIPELINE_VERSION
 header "Install the previous release of Tekton pipeline $PREVIOUS_PIPELINE_VERSION"
 install_pipeline_crd_version $PREVIOUS_PIPELINE_VERSION
 
+header "Create resources at previous release version"
+kubectl create namespace upgrade
+kubectl create -f ./test/upgrade/simpleResources.yaml
+
 # Upgrade to the current release.
 header "Upgrade to the current release of Tekton pipeline"
 install_pipeline_crd
 
-# Run the integration tests.
-go_test_e2e -timeout=20m ./test || failed=1
+header "Start runs upon resources created at current release version"
+kubectl create -f ./test/upgrade/simpleRuns.yaml
 
 # Run the post-integration tests. We do not need to install the resources again, since
 # they are installed before the upgrade. We verify if they still work, after going through
 # the upgrade.
-go_test_e2e -tags=examples -timeout=20m ./test/ || failed=1
+for test in taskrun pipelinerun; do
+  header "Running YAML e2e tests for ${test}s"
+  if ! run_tests ${test}; then
+    echo "ERROR: one or more YAML tests failed"
+    output_yaml_test_results ${test}
+    output_pods_logs ${test}
+    failed=1
+  fi
+done
 
 (( failed )) && fail_test
 

test/upgrade/simpleResources.yaml

@@ -0,0 +1,76 @@
+apiVersion: tekton.dev/v1
+kind: Task
+metadata:
+  name: simple-task
+  namespace: upgrade
+spec:
+  steps:
+  - name: step
+    image: gcr.io/google.com/cloudsdktool/cloud-sdk:alpine
+    command: ['/bin/bash']
+    workingDir: /dir
+  stepTemplate:
+    image: gcr.io/google.com/cloudsdktool/cloud-sdk:alpine
+    command: ['/bin/bash']
+  sidecars:
+  - name: server
+    image: alpine/git:v2.26.2
+    command: ['/bin/bash']
+    workingDir: /dir
+    script: echo test
+  volumes:
+    - name: messages
+      emptyDir: {}
+  params:
+  - name: PARAM
+    description: param des
+    type: string
+    default: "1"
+  workspaces:
+  - name: workspace
+    description: description
+    mountPath: /foo
+    readOnly: true
+    optional: true
+---
+apiVersion: tekton.dev/v1
+kind: Pipeline
+metadata:
+  name: simple-pipeline
+  namespace: upgrade
+spec:
+  description: foo
+  tasks:
+  - name: generate-result
+    params:
+    - name: STRING_LENGTH
+      value: 1
+    taskSpec:
+      params:
+        - name: task1-result
+          type: string
+          default: "1"
+      steps:
+        - image: alpine
+          onError: continue
+          name: exit-with-255
+          script: |
+            exit 255
+    timeout: 60s
+  workspaces:
+  - name: empty-dir
+  finally:
+  - name: echo-status
+    taskSpec:
+      params:
+        - name: echoStatus
+          type: string
+          default: "status"
+      steps:
+        - name: verify-status
+          image: ubuntu
+          script: |
+            if [ $(params.echoStatus) == "Succeeded" ]
+            then
+              echo " Good night! echoed successfully"
+            fi

test/upgrade/simpleRuns.yaml

@@ -0,0 +1,20 @@
+apiVersion: tekton.dev/v1
+kind: PipelineRun
+metadata:
+  name: simple-pipelinerun
+  namespace: upgrade
+spec:
+  pipelineRef:
+    name: simple-pipeline
+  workspaces:
+    - name: empty-dir
+      emptyDir: {}
+---
+apiVersion: tekton.dev/v1
+kind: TaskRun
+metadata:
+  name: simple-taskrun
+  namespace: upgrade
+spec:
+  taskRef:
+    name: simple-task