Merge branch 'workhorse-0.7.1' into 'master'

Use gitlab-workhorse 0.7.1

A small extra defense against interrupted git raw responses. Nice to
have in 8.6 because we introduce /raw/ caching; it would be
unfortunate if incorrect (truncated) responses got cached.

See merge request !3330

GITLAB_WORKHORSE_VERSION

-0.6.5
+0.7.1

doc/install/installation.md

@@ -348,7 +348,7 @@ GitLab Shell is an SSH access and repository management software developed speci
     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 0.6.5
+    sudo -u git -H git checkout v0.7.1
     sudo -u git -H make
 
 ### Initialize Database and Activate Advanced Features

doc/update/8.5-to-8.6.md

@@ -58,7 +58,7 @@ GitLab 8.1.
 ```bash
 cd /home/git/gitlab-workhorse
 sudo -u git -H git fetch --all
-sudo -u git -H git checkout 0.6.5
+sudo -u git -H git checkout v0.7.1
 sudo -u git -H make
 ```