Merge branch 'sentry-raven_2.9' into 'master'

Bump sentry-raven to 2.9

See merge request gitlab-org/gitlab-ce!29352

Gemfile

@@ -275,7 +275,7 @@ gem 'virtus', '~> 1.0.1'
 gem 'base32', '~> 0.3.0'
 
 # Sentry integration
-gem 'sentry-raven', '~> 2.7'
+gem 'sentry-raven', '~> 2.9'
 
 gem 'premailer-rails', '~> 1.9.7'
 

Gemfile.lock

@@ -1217,7 +1217,7 @@ DEPENDENCIES
   scss_lint (~> 0.56.0)
   seed-fu (~> 2.3.7)
   selenium-webdriver (~> 3.141)
-  sentry-raven (~> 2.7)
+  sentry-raven (~> 2.9)
   settingslogic (~> 2.0.9)
   sham_rack (~> 1.3.6)
   shoulda-matchers (~> 4.0.1)