Add basic structure and files

Add basic directory structure and files for scenario on using kustomize with Cluster API

Signed-off-by: Scott Lowe <scott.lowe@scottlowe.org>

kubernetes/capi-kustomize/README.md

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+# Using Kustomize with Cluster API
+
+These files were created as examples to accompany [this blog post](https://blog.scottlowe.org/2019/11/04/using-kustomize-with-cluster-api-manifests/) on using `kustomize` with Cluster API (CAPI) manifests.

kubernetes/capi-kustomize/base/cluster.yaml

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+---
+apiVersion: cluster.x-k8s.io/v1alpha2
+kind: Cluster
+metadata:
+  name: capi-quickstart
+spec:
+  clusterNetwork:
+    pods:
+      cidrBlocks: ["192.168.0.0/16"]
+  infrastructureRef:
+    apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
+    kind: AWSCluster
+    name: capi-quickstart
+---
+apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
+kind: AWSCluster
+metadata:
+  name: capi-quickstart
+spec:
+  region: us-east-1
+  sshKeyName: default

kubernetes/capi-kustomize/base/controlplane.yaml

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+---
+apiVersion: cluster.x-k8s.io/v1alpha2
+kind: Machine
+metadata:
+  name: capi-quickstart-controlplane-0
+  labels:
+    cluster.x-k8s.io/control-plane: "true"
+    cluster.x-k8s.io/cluster-name: "capi-quickstart"
+spec:
+  version: v1.15.3
+  bootstrap:
+    configRef:
+      apiVersion: bootstrap.cluster.x-k8s.io/v1alpha2
+      kind: KubeadmConfig
+      name: capi-quickstart-controlplane-0
+  infrastructureRef:
+    apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
+    kind: AWSMachine
+    name: capi-quickstart-controlplane-0
+---
+apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
+kind: AWSMachine
+metadata:
+  name: capi-quickstart-controlplane-0
+spec:
+  instanceType: t3.large
+  iamInstanceProfile: "controllers.cluster-api-provider-aws.sigs.k8s.io"
+  sshKeyName: default
+---
+apiVersion: bootstrap.cluster.x-k8s.io/v1alpha2
+kind: KubeadmConfig
+metadata:
+  name: capi-quickstart-controlplane-0
+spec:
+  initConfiguration:
+    nodeRegistration:
+      name: '{{ ds.meta_data.hostname }}'
+      kubeletExtraArgs:
+        cloud-provider: aws
+  clusterConfiguration:
+    apiServer:
+      extraArgs:
+        cloud-provider: aws
+    controllerManager:
+      extraArgs:
+        cloud-provider: aws

kubernetes/capi-kustomize/base/kustomization.yaml

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+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - cluster.yaml
+  - controlplane.yaml
+  - workers.yaml

kubernetes/capi-kustomize/base/workers.yaml

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+apiVersion: cluster.x-k8s.io/v1alpha2
+kind: MachineDeployment
+metadata:
+  name: capi-quickstart-worker
+  labels:
+    cluster.x-k8s.io/cluster-name: capi-quickstart
+    nodepool: nodepool-0
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      cluster.x-k8s.io/cluster-name: capi-quickstart
+      nodepool: nodepool-0
+  template:
+    metadata:
+      labels:
+        cluster.x-k8s.io/cluster-name: capi-quickstart
+        nodepool: nodepool-0
+    spec:
+      version: v1.15.3
+      bootstrap:
+        configRef:
+          name: capi-quickstart-worker
+          apiVersion: bootstrap.cluster.x-k8s.io/v1alpha2
+          kind: KubeadmConfigTemplate
+      infrastructureRef:
+        name: capi-quickstart-worker
+        apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
+        kind: AWSMachineTemplate
+---
+apiVersion: infrastructure.cluster.x-k8s.io/v1alpha2
+kind: AWSMachineTemplate
+metadata:
+  name: capi-quickstart-worker
+spec:
+  template:
+    spec:
+      instanceType: t3.large
+      iamInstanceProfile: "nodes.cluster-api-provider-aws.sigs.k8s.io"
+      sshKeyName: default
+---
+apiVersion: bootstrap.cluster.x-k8s.io/v1alpha2
+kind: KubeadmConfigTemplate
+metadata:
+  name: capi-quickstart-worker
+spec:
+  template:
+    spec:
+      joinConfiguration:
+        nodeRegistration:
+          name: '{{ ds.meta_data.hostname }}'
+          kubeletExtraArgs:
+            cloud-provider: aws

kubernetes/capi-kustomize/overlays/use2-cluster1/kustomization.yaml

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+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ../../base

kubernetes/capi-kustomize/overlays/usw2-cluster1/kustomization.yaml

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+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ../../base

kubernetes/capi-kustomize/overlays/usw2-cluster2/kustomization.yaml

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+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ../../base