e2e: Add manifest generation test

test/e2e/22_manifest_generation.bats

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+#!/usr/bin/env bats
+
+load lib/env
+load lib/install
+load lib/poll
+load lib/defer
+
+function setup() {
+  kubectl create namespace "$FLUX_NAMESPACE"
+  # Install flux and the git server, allowing external access
+  install_git_srv git_srv_result "22_manifest_generation/gitsrv"
+  # shellcheck disable=SC2154
+  export GIT_SSH_COMMAND="${git_srv_result[0]}"
+  # Teardown the created port-forward to gitsrv.
+  defer kill "${git_srv_result[1]}"
+  install_flux_with_fluxctl "22_manifest_generation/flux"
+}
+
+@test "Basic sync and editing" {
+  # Wait until flux deploys the workloads
+  poll_until_true 'workload podinfo' 'kubectl -n demo describe deployment/podinfo'
+
+  # Make sure that the production patch is applied (the podinfo HorizontalPodAutoscaler should have
+  # a minReplicas value of 2)
+  poll_until_equals 'podinfo hpa minReplicas of 2' '2' "kubectl get hpa podinfo --namespace demo -o\"jsonpath={['spec']['minReplicas']}\""
+
+  # Make sure the 'patchUpdated' mechanism works when changing annotations through fluxctl
+  fluxctl --k8s-fwd-ns "${FLUX_NAMESPACE}" automate -n demo --workload deployment/podinfo >&3
+
+  poll_until_true 'podinfo to be automated' "fluxctl --k8s-fwd-ns \"${FLUX_NAMESPACE}\" list-workloads -n demo | grep podinfod | grep automated"
+
+}
+
+function teardown() {
+  run_deferred
+  # Although the namespace delete below takes care of removing most Flux
+  # elements, the global resources will not be removed without this.
+  uninstall_flux_with_fluxctl
+  # Removing the namespace also takes care of removing Flux and gitsrv.
+  kubectl delete namespace "$FLUX_NAMESPACE"
+  # Only remove the demo workloads after Flux, so that they cannot be recreated.
+  kubectl delete namespace "$DEMO_NAMESPACE"
+}

test/e2e/fixtures/kustom/22_manifest_generation/flux/kustomization.yaml

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+bases:
+- "../../base/flux"
+patchesJson6902:
+- target:
+    group: apps
+    version: v1
+    kind: Deployment
+    name: flux
+  path: manifest_generation_patch.yaml

test/e2e/fixtures/kustom/22_manifest_generation/flux/manifest_generation_patch.yaml

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+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: --manifest-generation
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: --git-path=production
+

test/e2e/fixtures/kustom/22_manifest_generation/gitsrv/kustomization.yaml

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+bases:
+- "../../base/gitsrv"
+patchesJson6902:
+- target:
+    group: apps
+    version: v1
+    kind: Deployment
+    name: gitsrv
+  path: manifest_generation_patch.yaml

test/e2e/fixtures/kustom/22_manifest_generation/gitsrv/manifest_generation_patch.yaml

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+- op: replace
+  path: /spec/template/spec/containers/0/env
+  value:
+    - name: REPO
+      value: "cluster.git"
+    - name: TAR_URL
+      value: https://github.com/weaveworks/flux-kustomize-example/archive/master.tar.gz