Double the concurrency of rspec-*-ee* jobs

.gitlab-ci.yml

@@ -593,17 +593,29 @@ danger-review:
     - danger --fail-on-errors=true
 
 # EE jobs
-rspec-pg-ee 0 2: *rspec-ee-pg
-rspec-pg-ee 1 2: *rspec-ee-pg
-rspec-mysql-ee 0 2: *rspec-ee-mysql
-rspec-mysql-ee 1 2: *rspec-ee-mysql
+rspec-pg-ee 0 4: *rspec-ee-pg
+rspec-pg-ee 1 4: *rspec-ee-pg
+rspec-pg-ee 2 4: *rspec-ee-pg
+rspec-pg-ee 3 4: *rspec-ee-pg
+
+rspec-mysql-ee 0 4: *rspec-ee-mysql
+rspec-mysql-ee 1 4: *rspec-ee-mysql
+rspec-mysql-ee 2 4: *rspec-ee-mysql
+rspec-mysql-ee 3 4: *rspec-ee-mysql
+
 rspec-pg geo 0 1: *rspec-metadata-pg-geo-9-6
 rspec-pg-10 geo 0 1: *rspec-metadata-pg-geo-10-2
 
-rspec-pg-ee-rails5 0 2: *rspec-ee-pg-rails5
-rspec-pg-ee-rails5 1 2: *rspec-ee-pg-rails5
-rspec-mysql-ee-rails5 0 2: *rspec-ee-mysql-rails5
-rspec-mysql-ee-rails5 1 2: *rspec-ee-mysql-rails5
+rspec-pg-ee-rails5 0 4: *rspec-ee-pg-rails5
+rspec-pg-ee-rails5 1 4: *rspec-ee-pg-rails5
+rspec-pg-ee-rails5 2 4: *rspec-ee-pg-rails5
+rspec-pg-ee-rails5 3 4: *rspec-ee-pg-rails5
+
+rspec-mysql-ee-rails5 0 4: *rspec-ee-mysql-rails5
+rspec-mysql-ee-rails5 1 4: *rspec-ee-mysql-rails5
+rspec-mysql-ee-rails5 2 4: *rspec-ee-mysql-rails5
+rspec-mysql-ee-rails5 3 4: *rspec-ee-mysql-rails5
+
 rspec-pg-geo-rails5 0 1: *rspec-metadata-pg-geo-9-6-rails5
 rspec-pg-10-geo-rails5 0 1: *rspec-metadata-pg-geo-10-2-rails5
 ## EE jobs