Add Rubocop

- Pull in the 37signals house style
- Autofix violations
- Add to CI

test/integration/accessory_test.rb

@@ -31,7 +31,7 @@ class AccessoryTest < IntegrationTest
     end
 
     def assert_accessory_not_running(name)
-      refute_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
+      assert_no_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
     end
 
     def accessory_details(name)

test/integration/integration_test.rb

@@ -11,7 +11,7 @@ class IntegrationTest < ActiveSupport::TestCase
 
   teardown do
     unless passed?
-      [:deployer, :vm1, :vm2, :shared, :load_balancer, :registry].each do |container|
+      [ :deployer, :vm1, :vm2, :shared, :load_balancer, :registry ].each do |container|
         puts
         puts "Logs for #{container}:"
         docker_compose :logs, container

test/integration/traefik_test.rb

@@ -56,7 +56,7 @@ class TraefikTest < IntegrationTest
     end
 
     def assert_traefik_not_running
-      refute_match /traefik:v2.10   "\/entrypoint.sh/, traefik_details
+      assert_no_match /traefik:v2.10   "\/entrypoint.sh/, traefik_details
     end
 
     def traefik_details