Sync config v14.10.0 : Add commented-out potions for gitaly: runtime_dir

See upstream merge request:
https://gitlab.com/gitlab-org/gitaly/-/merge_requests/4415

First contain gitaly v14.10.0
Corresponding gitlab v14.10.0

Author: kkimurak

assets/runtime/config/gitaly/config.toml

@@ -7,6 +7,11 @@ socket_path = "{{GITALY_SOCKET_PATH}}"
 # The directory where Gitaly's executables are stored
 bin_dir = "/usr/local/bin/"
 
+# # Optional: The directory where Gitaly can create all files required to
+# # properly operate at runtime. If not set, Gitaly will create a directory in
+# # the global temporary directory. This directory must exist.
+# runtime_dir = "/home/git/gitaly/run"
+
 # # Optional: listen on a TCP socket. This is insecure (no authentication)
 # listen_addr = "localhost:9999"
 # tls_listen_addr = "localhost:8888"