Makefile: generate config/manager/kustomization.yaml (#728)

There is a modification, `kustomize edit` of this file on deploy and
bundle targets. Since the file is stored in the version control it
pollutes `git status` and `git commit -a`.

Store only "template" in the VCS and generate the file at the build
time.

Move it to a separate target to not repeat yourself.

It will check the target for more other targets than before, but it
should not make any harm.

Make it phony to generate the file every time for the case of
changing IMG variable.

Signed-off-by: Yauheni Kaliuta <ykaliuta@redhat.com>

Makefile

@@ -178,17 +178,26 @@ ifndef ignore-not-found
   ignore-not-found = false
 endif
 
+.PHONY: prepare
+prepare: manifests kustomize manager-kustomization
+
+# phony target for the case of changing IMG variable
+.PHONY: manager-kustomization
+manager-kustomization: config/manager/kustomization.yaml.in
+	cd config/manager \
+		&& cp -f kustomization.yaml.in kustomization.yaml \
+		&& $(KUSTOMIZE) edit set image controller=$(IMG)
+
 .PHONY: install
-install: manifests kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
+install: prepare ## Install CRDs into the K8s cluster specified in ~/.kube/config.
 	$(KUSTOMIZE) build config/crd | kubectl apply -f -
 
 .PHONY: uninstall
-uninstall: manifests kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
+uninstall: prepare ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
 	$(KUSTOMIZE) build config/crd | kubectl delete --ignore-not-found=$(ignore-not-found) -f -
 
 .PHONY: deploy
-deploy: manifests kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config.
-	cd config/manager && $(KUSTOMIZE) edit set image controller=$(IMG)
+deploy: prepare ## Deploy controller to the K8s cluster specified in ~/.kube/config.
 	$(KUSTOMIZE) build config/default | kubectl apply --namespace $(OPERATOR_NAMESPACE) -f -
 
 .PHONY: undeploy
@@ -229,9 +238,8 @@ $(GOLANGCI_LINT): $(LOCALBIN)
 
 BUNDLE_DIR ?= "bundle"
 .PHONY: bundle
-bundle: manifests kustomize operator-sdk ## Generate bundle manifests and metadata, then validate generated files.
+bundle: prepare operator-sdk ## Generate bundle manifests and metadata, then validate generated files.
 	$(OPERATOR_SDK) generate kustomize manifests -q
-	cd config/manager && $(KUSTOMIZE) edit set image controller=$(IMG)
 	$(KUSTOMIZE) build config/manifests | $(OPERATOR_SDK) generate bundle $(BUNDLE_GEN_FLAGS)
 	$(OPERATOR_SDK) bundle validate ./$(BUNDLE_DIR)
 	mv bundle.Dockerfile Dockerfiles/