Add examples for scheduling runs to a Windows node

Some examples have been added to demonstrate how to schedule TaskRuns
and PipelineRuns on a Windows node using node selectors and node
affinity constraints.

examples/v1beta1/pipelineruns/no-ci/windows-node-affinity.yaml

@@ -0,0 +1,43 @@
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: windows-task-na
+spec:
+  steps:
+  - name: ping-localhost
+    image: mcr.microsoft.com/windows/nanoserver:1809
+    command: ["cmd.exe"]
+    args:
+      - "/S"
+      - "/C"
+      - "echo Hello from Windows"
+---
+apiVersion: tekton.dev/v1beta1
+kind: Pipeline
+metadata:
+  name: windows-pipeline-na
+spec:
+  tasks:
+  - name: windows-task-na
+    taskRef:
+      name: windows-task-na
+---
+apiVersion: tekton.dev/v1beta1
+kind: PipelineRun
+metadata:
+  name: windows-pipeline-na-run
+spec:
+  pipelineRef:
+    name: windows-pipeline-na
+  taskRunSpecs:
+    - pipelineTaskName: windows-task-na
+      taskPodTemplate:
+        affinity:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: kubernetes.io/os
+                    operator: In
+                    values:
+                    - windows

examples/v1beta1/pipelineruns/no-ci/windows-node-selectors.yaml

@@ -0,0 +1,36 @@
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: windows-task-ns
+spec:
+  steps:
+  - name: ping-localhost
+    image: mcr.microsoft.com/windows/nanoserver:1809
+    command: ["cmd.exe"]
+    args:
+      - "/S"
+      - "/C"
+      - "echo Hello from Windows"
+---
+apiVersion: tekton.dev/v1beta1
+kind: Pipeline
+metadata:
+  name: windows-pipeline-ns
+spec:
+  tasks:
+  - name: windows-task-ns
+    taskRef:
+      name: windows-task-ns
+---
+apiVersion: tekton.dev/v1beta1
+kind: PipelineRun
+metadata:
+  name: windows-pipeline-ns-run
+spec:
+  pipelineRef:
+    name: windows-pipeline-ns
+  taskRunSpecs:
+    - pipelineTaskName: windows-task-ns
+      taskPodTemplate:
+        nodeSelector:
+          kubernetes.io/os: windows

examples/v1beta1/taskruns/no-ci/windows-node-affinity.yaml

@@ -0,0 +1,31 @@
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: windows-task-na
+spec:
+  steps:
+  - name: ping-localhost
+    image: mcr.microsoft.com/windows/nanoserver:1809
+    command: ["cmd.exe"]
+    args:
+      - "/S"
+      - "/C"
+      - "echo Hello from Windows"
+---
+apiVersion: tekton.dev/v1beta1
+kind: TaskRun
+metadata:
+  name: windows-task-na-run
+spec:
+  taskRef:
+    name: windows-task-na
+  podTemplate:
+    affinity:
+      nodeAffinity:
+        requiredDuringSchedulingIgnoredDuringExecution:
+          nodeSelectorTerms:
+            - matchExpressions:
+              - key: kubernetes.io/os
+                operator: In
+                values:
+                - windows

examples/v1beta1/taskruns/no-ci/windows-node-selectors.yaml

@@ -0,0 +1,24 @@
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: windows-task-ns
+spec:
+  steps:
+  - name: ping-localhost
+    image: mcr.microsoft.com/windows/nanoserver:1809
+    command: ["cmd.exe"]
+    args:
+      - "/S"
+      - "/C"
+      - "echo Hello from Windows"
+---
+apiVersion: tekton.dev/v1beta1
+kind: TaskRun
+metadata:
+  name: windows-task-ns-run
+spec:
+  taskRef:
+    name: windows-task-ns
+  podTemplate:
+    nodeSelector:
+      kubernetes.io/os: windows