Merge branch 'update_grack' into 'master'

Update gitlab-grack to 2.0.2.

Updating to grack version 2.0.2 to fix an issue with smart http clients.

See merge request !559

Gemfile

@@ -42,7 +42,7 @@ gem "browser"
 gem "gitlab_git", '~> 7.1.10'
 
 # Ruby/Rack Git Smart-HTTP Server Handler
-gem 'gitlab-grack', '~> 2.0.1', require: 'grack'
+gem 'gitlab-grack', '~> 2.0.2', require: 'grack'
 
 # LDAP Auth
 gem 'gitlab_omniauth-ldap', '1.2.1', require: "omniauth-ldap"

Gemfile.lock

@@ -199,7 +199,7 @@ GEM
     gitlab-flowdock-git-hook (0.4.2.2)
       gitlab-grit (>= 2.4.1)
       multi_json
-    gitlab-grack (2.0.1)
+    gitlab-grack (2.0.2)
       rack (~> 1.5.1)
     gitlab-grit (2.7.2)
       charlock_holmes (~> 0.6)
@@ -696,7 +696,7 @@ DEPENDENCIES
   gemnasium-gitlab-service (~> 0.2)
   github-markup
   gitlab-flowdock-git-hook (~> 0.4.2)
-  gitlab-grack (~> 2.0.1)
+  gitlab-grack (~> 2.0.2)
   gitlab-linguist (~> 3.0.1)
   gitlab_emoji (~> 0.1)
   gitlab_git (~> 7.1.10)