Install configuration file for ActionCable

Starting with GitLab 14.5, ActionCable is mandatory, and cable.yml is a
required configuration file.

Signed-off-by: Balasankar C <balasankarc@debian.org>

debian/README.Debian

@@ -6,7 +6,7 @@ and listens on tcp port 6379. So gitlab package in debian is configured to use
 tcp sockets. gitlab developers recommend using unix sockets. You can change to
 using unix sockets by changing the following configuration files.
 
- /etc/redis/redis.conf and /etc/gitlab/resque.yml
+ /etc/redis/redis.conf, /etc/gitlab/resque.yml, and /etc/gitlab/cable.yml
 
 2. wiki backend: debian package uses gollum-rugged_adapter whereas gitlab
 upstream still use gollum-grit_adapter. grit is no longer maintained and grit

debian/changelog

@@ -1,3 +1,10 @@
+gitlab (15.0.4+ds1-2) UNRELEASED; urgency=medium
+
+  [ Balasankar C]
+  * Install ActionCable configuration file (Closes: #1015303)
+
+ -- Balasankar C <balasankarc@debian.org>  Sun, 24 Jul 2022 19:12:07 +0530
+
 gitlab (15.0.4+ds1-1) experimental; urgency=medium
 
   [ Antoine Le Gonidec ]

debian/conf/cable.yml

@@ -0,0 +1,9 @@
+production:
+  adapter: redis
+  url: redis://localhost:6379
+development:
+  adapter: redis
+  url: redis://localhost:6379
+test:
+  adapter: redis
+  url: redis://localhost:6379

debian/gitlab.install

@@ -3,6 +3,7 @@ debian/conf/puma.rb etc/gitlab
 debian/conf/database.yml etc/gitlab
 debian/conf/gitlab.yml.example usr/lib/gitlab/templates
 debian/conf/resque.yml etc/gitlab
+debian/conf/cable.yml etc/gitlab
 debian/conf/gitlab-debian.conf.example usr/lib/gitlab/templates
 debian/conf/*.target lib/systemd/system
 debian/conf/smtp_settings.rb etc/gitlab/initializers