refactor: set all options at once

there is no problems setting `agent` or `rejectUnauthorized` to undefined

Author: gr2m

lib/index.js

@@ -712,25 +712,15 @@ var Client = module.exports = function (config) {
     headers.host = queryAndUrl.host || host
 
     var options = {
+      agent: agent,
       host: headers.host,
       port: port,
       path: path,
       method: method,
       headers: headers,
       ca: ca,
-      family: this.config.family
-    }
-
-    // agent will be handled differently soon: https://github.com/octokit/node-github/issues/656
-    /* istanbul ignore if */
-    if (agent) {
-      options.agent = agent
-    }
-
-    // certificates will be handled differently soon: https://github.com/octokit/node-github/issues/656
-    /* istanbul ignore if */
-    if (this.config.rejectUnauthorized !== undefined) {
-      options.rejectUnauthorized = this.config.rejectUnauthorized
+      family: this.config.family,
+      rejectUnauthorized: this.config.rejectUnauthorized
     }
 
     debug('REQUEST:', options)