new tools.go file to get code-generator dependency + updated codegen + remove Glide files and update docs

Makefile

@@ -78,7 +78,8 @@ scm-source.json: .git
 	echo '{\n "url": "git:$(GITURL)",\n "revision": "$(GITHEAD)",\n "author": "$(USER)",\n "status": "$(GITSTATUS)"\n}' > scm-source.json
 
 tools:
-	@go get -u honnef.co/go/tools/cmd/staticcheck
+	GO111MODULE=on go get -u honnef.co/go/tools/cmd/staticcheck
+	GO111MODULE=on go get k8s.io/client-go@kubernetes-1.16.0
 
 fmt:
 	@gofmt -l -w -s $(DIRS)
@@ -88,11 +89,11 @@ vet:
 	@staticcheck $(PKG)
 
 deps:
-	@go mod vendor
+	GO111MODULE=on go mod vendor
 
 test:
 	hack/verify-codegen.sh
-	@go test ./...
+	@go test ./pkg/...
 
 e2e: docker # build operator image to be tested
 	cd e2e; make tools test clean