Update Windows Service Wrapper from 2.3.0 to 2.9.0

[oleg-nenashev]

See https://github.com/winsw/winsw/releases for the changelog. There is a lot of changes, most notable ones for the current .NET 2.0 package:

Enhancements:

• Enable TLS 1.1/1.2 in .NET2 and .NET4 packages on Windows 7 and Windows Server 2008 R2
  • JENKINS-51577 #25 may be reverted now
• Support 'If-Modified-Since' for download
• Support security descriptor string

Bug fixes:

• Fix Runaway Process Killer extension so that it does not kill wrong processes with the same PID on startup
• Ensure that environment variables are loaded before resolving configurations
• Fix default domain name in serviceaccount parameter

[oleg-nenashev]

Windows support policy has been published, so we can proceed IMO: https://www.jenkins.io/doc/administration/requirements/windows/

[oleg-nenashev]

i will proceed with the merge to get other changes unblocked