ES 5.0-alpha5 on windows fails to install windows service

[alextxm]

Elasticsearch version: 5.0-alpha5

Plugins installed: []

JVM version: 1.8.0_92

OS version: Windows Server 2008 R2

Description of the problem including expected versus actual behavior:
Execution of the "service install" command fails due to folder name containing spaces (see screenshot)
. The same command / configuration works fine with ES 2.3.x

Steps to reproduce:

1. Install ES 5.0-alpha5 into a folder like C:\Program Files\elasticsearch
2. As an admin, go to to bin/ and try to execute "service install myesservicename"

[jasontedor]

I can reproduce this issue, thank you for reporting @alextxm. I have marked you as eligible for the Pioneer Program.

[jasontedor]

I opened #19951.