git commit after nginx update

ee/cli/plugins/stack_upgrade.py

@@ -7,6 +7,7 @@ from ee.core.apt_repo import EERepo
 from ee.core.services import EEService
 from ee.core.fileutils import EEFileUtils
 from ee.core.shellexec import EEShellExec
+from ee.core.git import EEGit
 import configparser
 import os
 
@@ -213,6 +214,8 @@ class EEStackUpgradeController(CementBaseController):
                 self.app.render((data), 'nginx-core.mustache', out=ee_nginx)
                 ee_nginx.close()
 
+                EEGit.add(self, ["/etc/nginx"], msg="Updated Nginx")
+
                 EEService.restart_service(self, 'nginx')
 
             if set(EEVariables.ee_php).issubset(set(apt_packages)):