Add scripts to generate Go mock files to Makefile

Signed-off-by: tenzen-y <yuki.iwai.tz@gmail.com>

Makefile

@@ -2,11 +2,13 @@ HAS_LINT := $(shell command -v golangci-lint;)
 HAS_YAMLLINT := $(shell command -v yamllint;)
 HAS_SHELLCHECK := $(shell command -v shellcheck;)
 HAS_SETUP_ENVTEST := $(shell command -v setup-envtest;)
+HAS_MOCKGEN := $(shell command -v mockgen;)
 
 COMMIT := v1beta1-$(shell git rev-parse --short=7 HEAD)
 KATIB_REGISTRY := docker.io/kubeflowkatib
 CPU_ARCH ?= amd64
 ENVTEST_K8S_VERSION ?= 1.24
+MOCKGEN_VERSION ?= $(shell grep 'github.com/golang/mock' go.mod | cut -d ' ' -f 2)
 
 # for pytest
 PYTHONPATH := $(PYTHONPATH):$(CURDIR)/pkg/apis/manager/v1beta1/python:$(CURDIR)/pkg/apis/manager/health/python
@@ -21,9 +23,9 @@ test: envtest
 envtest:
 ifndef HAS_SETUP_ENVTEST
  go install sigs.k8s.io/controller-runtime/tools/setup-envtest@c7a98aa706379c4e5c79ea675c7f333192677971 # v0.12.3
- @echo "setup-envtest has been installed"
+ $(info "setup-envtest has been installed")
 endif
- @echo "setup-envtest has already installed"
+ $(info "setup-envtest has already installed")
 
 check: generate fmt vet lint
 
@@ -33,14 +35,14 @@ fmt:
 lint:
 ifndef HAS_LINT
  go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.50.1
- @echo "golangci-lint has been installed"
+ $(info "golangci-lint has been installed")
 endif
  hack/verify-golangci-lint.sh
 
 yamllint:
 ifndef HAS_YAMLLINT
  pip install yamllint
- @echo "yamllint has been installed"
+ $(info "yamllint has been installed")
 endif
  hack/verify-yamllint.sh
 
@@ -50,7 +52,7 @@ vet:
 shellcheck:
 ifndef HAS_SHELLCHECK
  bash hack/install-shellcheck.sh
- @echo "shellcheck has been installed"
+ $(info "shellcheck has been installed")
 endif
  hack/verify-shellcheck.sh
 
@@ -66,18 +68,24 @@ undeploy:
  bash scripts/v1beta1/undeploy.sh
 
 # Run this if you update any existing controller APIs.
-# 1. Genereate deepcopy, clientset, listers, informers for the APIs (hack/update-codegen.sh)
+# 1. Generate deepcopy, clientset, listers, informers for the APIs (hack/update-codegen.sh)
 # 2. Generate open-api for the APIs (hack/update-openapigen)
 # 3. Generate Python SDK for Katib (hack/gen-python-sdk/gen-sdk.sh)
 # 4. Generate gRPC manager APIs (pkg/apis/manager/v1beta1/build.sh and pkg/apis/manager/health/build.sh)
+# 5. Generate Go mock codes
 generate:
 ifndef GOPATH
  $(error GOPATH not defined, please define GOPATH. Run "go help gopath" to learn more about GOPATH)
+endif
+ifndef HAS_MOCKGEN
+ go install github.com/golang/mock/mockgen@$(MOCKGEN_VERSION)
+ $(info "mockgen has been installed")
 endif
  go generate ./pkg/... ./cmd/...
  hack/gen-python-sdk/gen-sdk.sh
  pkg/apis/manager/v1beta1/build.sh
  pkg/apis/manager/health/build.sh
+ hack/update-mockgen.sh
 
 # Build images for the Katib v1beta1 components.
 build: generate