Pump to 1.9.0-alpha.0 prerelease (#1463)

Fix: #1462

Author: minggangw

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rclnodejs",
-  "version": "1.8.3",
+  "version": "1.9.0-alpha.0",
   "description": "ROS2.0 JavaScript client with Node.js",
   "main": "index.js",
   "types": "types/index.d.ts",

test/test-message-generation-bin.js

@@ -103,7 +103,7 @@ describe('rclnodejs generate-messages binary-script tests', function () {
     });
 
     let tgz;
-    const regex = /^rclnodejs-\d+.\d+.\d+.tgz/;
+    const regex = /^rclnodejs-\d+\.\d+\.\d+.*\.tgz/;
     for (let file of fs.readdirSync(this.tmpPkg)) {
       if (file.match(regex)) {
         tgz = file;