Update gitlab-workhorse and remove mention of gitlab-git-http-server

[ci skip]

doc/update/8.2-to-8.3.md

@@ -67,36 +67,23 @@ sudo -u git -H git checkout 8-3-stable-ee
 
 ```bash
 cd /home/git/gitlab-shell
-sudo -u git -H git fetch
+sudo -u git -H git fetch --all
 sudo -u git -H git checkout v2.6.8
 ```
 
-### 5. Replace gitlab-git-http-server with gitlab-workhorse
+### 5. Update gitlab-workhorse
 
 Install and compile gitlab-workhorse. This requires [Go
 1.5](https://golang.org/dl) which should already be on your system
 from GitLab 8.1.
 
 ```bash
-cd /home/git
-sudo -u git -H git clone https://gitlab.com/gitlab-org/gitlab-workhorse.git
-cd gitlab-workhorse
-sudo -u git -H git checkout 0.4.2
+cd /home/git/gitlab-workhorse
+sudo -u git -H git fetch --all
+sudo -u git -H git checkout 0.4.3
 sudo -u git -H make
 ```
 
-Update the GitLab init script and 'default' file.
-
-```
-cd /home/git/gitlab
-sudo cp lib/support/init.d/gitlab /etc/init.d/gitlab
-test -e /etc/default/gitlab && \
-  sudo sed -i.pre-8.2 's/^\([^=]*\)gitlab_git_http_server/\1gitlab_workhorse/' /etc/default/gitlab
-```
-
-Make sure that you also update your **NGINX configuration** to use
-the new gitlab-workhorse.socket file.
-
 ### 6. Install libs, migrations, etc.
 
 ```bash