Fix knapsack for master

.gitlab-ci.yml

@@ -144,7 +144,7 @@ spinach 9 10: *spinach-knapsack
   <<: *ruby-22
 
 .spinach-knapsack-ruby22: &spinach-knapsack-ruby22
-  <<: *rspec-knapsack
+  <<: *spinach-knapsack
   <<: *ruby-22
   
 rspec 0 20 ruby22: *rspec-knapsack-ruby22

CHANGELOG

@@ -16,6 +16,7 @@ v 8.9.0 (unreleased)
   - Fix groups API to list only user's accessible projects
   - Redesign account and email confirmation emails
   - Use gitlab-shell v3.0.0
+  - Use Knapsack to evenly distribute tests across multiple nodes
   - Add `sha` parameter to MR merge API, to ensure only reviewed changes are merged
   - Don't allow MRs to be merged when commits were added since the last review / page load
   - Add DB index on users.state