🏃 Add ci-apidiff job

Signed-off-by: Vince Prignano <vincepri@vmware.com>

Makefile

@@ -49,6 +49,8 @@ RELEASE_NOTES := $(TOOLS_DIR)/$(RELEASE_NOTES_BIN)
 LINK_CHECKER_BIN := bin/liche
 LINK_CHECKER := $(TOOLS_DIR)/$(LINK_CHECKER_BIN)
 CLUSTERCTL_E2E_DIR := cmd/clusterctl/test/e2e
+GO_APIDIFF_BIN := bin/go-apidiff
+GO_APIDIFF := $(TOOLS_DIR)/$(GO_APIDIFF_BIN)
 
 # Binaries.
 # Need to use abspath so we can invoke these from subdirectories
@@ -179,6 +181,9 @@ $(RELEASE_NOTES): $(TOOLS_DIR)/go.mod
 $(LINK_CHECKER): $(TOOLS_DIR)/go.mod
 	cd $(TOOLS_DIR) && go build -tags=tools -o $(LINK_CHECKER_BIN) github.com/raviqqe/liche
 
+$(GO_APIDIFF): $(TOOLS_DIR)/go.mod
+	cd $(TOOLS_DIR) && go build -tags=tools -o $(GO_APIDIFF_BIN) github.com/joelanford/go-apidiff
+
 .PHONY: e2e-framework
 e2e-framework: ## Builds the CAPI e2e framework
 	cd $(E2E_FRAMEWORK_DIR); go build ./...

hack/tools/go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/go-bindata/go-bindata v3.1.2+incompatible
 	github.com/golangci/golangci-lint v1.23.8
+	github.com/joelanford/go-apidiff v0.0.0-20191206194835-106bcff5f060
 	github.com/raviqqe/liche v0.0.0-20200229003944-f57a5d1c5be4
 	golang.org/x/tools v0.0.0-20200204192400-7124308813f3
 	k8s.io/code-generator v0.18.0-alpha.2.0.20200130061103-7dfd5e9157ef