Merge branch 'gitaly-init-default' into 'master'

Duplicate gitaly init variables in 'default' file

Closes #31858

See merge request !11738

lib/support/init.d/gitlab.default.example

@@ -87,4 +87,6 @@ shell_path="/bin/bash"
 
 # This variable controls whether the init script starts/stops Gitaly
 gitaly_enabled=false
+gitaly_dir=$(cd $app_root/../gitaly 2> /dev/null && pwd)
+gitaly_pid_path="$pid_path/gitaly.pid"
 gitaly_log="$app_root/log/gitaly.log"