[gssapi/gssproxy] ec4634: systemd: add StateDirectory to gssproxy.service

[Alberto Garcia]

Branch: refs/heads/main
  Home:   https://github.com/gssapi/gssproxy
  Commit: ec463454c1f6e89bf8a1671bf0ef00fef2491f86
      https://github.com/gssapi/gssproxy/commit/ec463454c1f6e89bf8a1671bf0ef00fef2...
  Author: Alberto Garcia 
  Date:   2023-07-11 (Tue, 11 Jul 2023)

Changed paths:
    M systemd/gssproxy.service.in

Log Message:
  -----------
  systemd: add StateDirectory to gssproxy.service

gssproxy won't start if /var/lib/gssproxy is missing ("Failed to
create Unix Socket!"). systemd provides a directive to ensure that all
necessary state directories exist so we can use it in this case.

Signed-off-by: Alberto Garcia