Add vanity-import-fix make target (#2836)

Makefile

@@ -25,7 +25,7 @@ TIMEOUT = 60
 .DEFAULT_GOAL := precommit
 
 .PHONY: precommit ci
-precommit: dependabot-generate license-check misspell go-mod-tidy golangci-lint-fix test-default
+precommit: dependabot-generate license-check vanity-import-fix misspell go-mod-tidy golangci-lint-fix test-default
 ci: dependabot-check license-check lint vanity-import-check build test-default check-clean-work-tree test-coverage
 
 # Tools
@@ -166,7 +166,11 @@ lint: misspell lint-modules golangci-lint
 
 .PHONY: vanity-import-check
 vanity-import-check: | $(PORTO)
-	@$(PORTO) --include-internal -l .
+	@$(PORTO) --include-internal -l . || echo "(run: make vanity-import-fix)"
+
+.PHONY: vanity-import-fix
+vanity-import-fix: | $(PORTO)
+	@$(PORTO) --include-internal -w .
 
 .PHONY: misspell
 misspell: | $(MISSPELL)