makefile: pin code-generator to v2.0.0-alpha.1

Author: p0lyn0mial

Makefile

@@ -23,13 +23,13 @@ GOBIN_DIR=$(abspath ./bin )
 PATH := $(GOBIN_DIR):$(TOOLS_GOBIN_DIR):$(PATH)
 TMPDIR := $(shell mktemp -d)
 
-CODE_GENERATOR_VER := 2dc1248118a7f2337c6374ff5778c0880e1a4226
+CODE_GENERATOR_VER := v2.0.0-alpha.1
 CODE_GENERATOR_BIN := code-generator
 CODE_GENERATOR := $(TOOLS_DIR)/$(CODE_GENERATOR_BIN)-$(CODE_GENERATOR_VER)
 export CODE_GENERATOR # so hack scripts can use it
 
 $(CODE_GENERATOR):
-	GOBIN=$(TOOLS_GOBIN_DIR) $(GO_INSTALL) github.com/kcp-dev/code-generator $(CODE_GENERATOR_BIN) $(CODE_GENERATOR_VER)
+	GOBIN=$(TOOLS_GOBIN_DIR) $(GO_INSTALL) github.com/kcp-dev/code-generator/v2 $(CODE_GENERATOR_BIN) $(CODE_GENERATOR_VER)
 
 OPENSHIFT_GOIMPORTS_VER := c72f1dc2e3aacfa00aece3391d938c9bc734e791
 OPENSHIFT_GOIMPORTS_BIN := openshift-goimports