Debian 11 updates

Change-Id: I82f1236273afd3547c9de05ef061d7e5246957d7
diff --git a/vars/Debian.yml b/vars/Debian.yml
index ff3cd40..2e82178 100644
--- a/vars/Debian.yml
+++ b/vars/Debian.yml
@@ -10,6 +10,7 @@
 nginx_packages:
   - "nginx"
   - "python3-passlib"
+  - "procps"  # needed as debian initscripts call /bin/kill and others
 
 nginx_username: "www-data"
 nginx_groupname: "www-data"