Add const when defining chownCmd variable

Also fixed indent

Author: abetomo

lib/pip.js

@@ -97,8 +97,10 @@ function installRequirements() {
     if (process.platform === 'linux') {
       // Set the ownership of the .serverless/requirements folder to current user
       pipCmd = quote(pipCmd);
-      chownCmd = quote(['chown', '-R', `${process.getuid()}:${process.getgid()}`,
-                        '.serverless/requirements']);
+      const chownCmd = quote([
+        'chown', '-R', `${process.getuid()}:${process.getgid()}`,
+        '.serverless/requirements',
+      ]);
       pipCmd = ['/bin/bash', '-c', '"' + pipCmd + ' && ' + chownCmd + '"'];
     }
     options.push(this.options.dockerImage);