Makefile: propose commit'ing generated files after make update-api

Signed-off-by: Simon Deziel <[email protected]>

Makefile

@@ -157,6 +157,12 @@ endif
 	@# Generate spec and exclude package from dependency which causes a 'classifier: unknown swagger annotation "extendee"' error.
 	@# For more details see: https://github.com/go-swagger/go-swagger/issues/2917.
 	swagger generate spec -o doc/rest-api.yaml -w ./lxd -m -x github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2/options
+	if [ -t 0 ] && ! git diff --quiet -- ./doc/rest-api.yaml; then \
+		read -rp "Would you like to commit swagger YAML changes (Y/n)? " answer; \
+		if [ "$${answer:-y}" = "y" ] || [ "$${answer:-y}" = "Y" ]; then \
+			git commit -S -sm "doc/rest-api: Refresh swagger YAML" -- ./doc/rest-api.yaml;\
+		fi;\
+	fi
 
 .PHONY: update-metadata
 update-metadata: build