Add e2e tests for build/diff kustomization

Signed-off-by: Soule BA <soule@weave.works>

cmd/flux/testdata/build-kustomization/podinfo/deployment.yaml

@@ -0,0 +1,74 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo
+spec:
+  minReadySeconds: 3
+  revisionHistoryLimit: 5
+  progressDeadlineSeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: podinfo
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "9797"
+      labels:
+        app: podinfo
+    spec:
+      containers:
+      - name: podinfod
+        image: ghcr.io/stefanprodan/podinfo:6.0.10
+        imagePullPolicy: IfNotPresent
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        - name: http-metrics
+          containerPort: 9797
+          protocol: TCP
+        - name: grpc
+          containerPort: 9999
+          protocol: TCP
+        command:
+        - ./podinfo
+        - --port=9898
+        - --port-metrics=9797
+        - --grpc-port=9999
+        - --grpc-service-name=podinfo
+        - --level=info
+        - --random-delay=false
+        - --random-error=false
+        env:
+        - name: PODINFO_UI_COLOR
+          value: "#34577c"
+        livenessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/healthz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        readinessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/readyz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 2000m
+            memory: 512Mi
+          requests:
+            cpu: 100m
+            memory: 64Mi

cmd/flux/testdata/build-kustomization/podinfo/hpa.yaml

@@ -0,0 +1,20 @@
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: podinfo
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: podinfo
+  minReplicas: 2
+  maxReplicas: 4
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        # scale up if usage is above
+        # 99% of the requested CPU (100m)
+        averageUtilization: 99

cmd/flux/testdata/build-kustomization/podinfo/kustomization.yaml

@@ -0,0 +1,14 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ./deployment.yaml
+- ./hpa.yaml
+- ./service.yaml
+secretGenerator:
+ - files:
+   - token=token.encrypted
+   name: podinfo-token
+ - literals:
+   - username=admin
+   - password=1f2d1e2e67df
+   name: db-user-pass

cmd/flux/testdata/build-kustomization/podinfo/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: podinfo
+spec:
+  type: ClusterIP
+  selector:
+    app: podinfo
+  ports:
+    - name: http
+      port: 9898
+      protocol: TCP
+      targetPort: http
+    - port: 9999
+      targetPort: grpc
+      protocol: TCP
+      name: grpc

cmd/flux/testdata/build-kustomization/podinfo/token.encrypted

@@ -0,0 +1,20 @@
+ {
+     "data": "ENC[AES256_GCM,data:oBe5PlPmfQCUUc4sqKImjw==,iv:MLLEW15QC9kRdVVagJnzLCSk0xZGWIpAeTfHzyxT10g=,tag:K3GkBCGS+ut4Tpk6ndb0CA==,type:str]",
+     "sops": {
+         "kms": null,
+         "gcp_kms": null,
+         "azure_kv": null,
+         "hc_vault": null,
+         "age": [
+             {
+                 "recipient": "age10la2ge0wtvx3qr7datqf7rs4yngxszdal927fs9rukamr8u2pshsvtz7ce",
+                 "enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+                                                                                                                IFgyNTUxOSA1L2RpZHRrK1FSVmYrd1Va\nY0hxWFQzSDBsT1k3WjNtYmU1QmliaDJycXlNCnF1YjdNOThVbVNvMG9rNS9ZUXZw\nMnV0bnRUMGNtejFPbzM4U2UzWkszeVkKLS0tIGJ6UGhxMUV3YmVJTHlJSUJpRVRZ\nVjd0RVRadU8wekxXTHIrYUplYkN2aEEK0I/   MCEtXRk+b/N2G1JF3vHQT24dShWYD\nw+JIUSA3aLf2sv0zr2MdUEdVWBJoM8nT4D4xVbBORD+669W+9nDeSw==\n-----END AGE ENCRYPTED FILE-----\n"
+             }
+         ],
+         "lastmodified": "2021-11-26T16:34:51Z",
+         "mac": "ENC[AES256_GCM,data:COGzf5YCHNNP6z4JaEKrjN3M8f5+Q1uKUKTMHwj388/ICmLyi2sSrTmj7PP+X7M9jTVwa8wVgYTpNLiVJx+LcxqvIXM0Tyo+/Cu1zrfao98aiACP8+TSEDiFQNtEus23H+d/X1hqMwRHDI3kQ+                      6scgEGnqY57r3RDSA3E8EhHr4=,iv:LxitVIYm8srZVqFueJh9loClA44Y2Z3XAVYmxesMmOg=,tag:Y8qFD8UGlDfwNSv7xlcn6A==,type:str]",
+         "pgp": null,
+         "unencrypted_suffix": "_unencrypted",
+         "version": "3.7.1"
+     }
+ }