Use upstream version of rails-controller-testing

1.0.1 still contains an issue that breaks helper inclusion in view specs
Constrain value once new version released.

More information: https://github.com/rspec/rspec-rails/issues/1644

Gemfile

@@ -175,7 +175,10 @@ group :test do
   gem 'rspec-legacy_formatters', require: false
 
   # brings back testing for 'assigns' and 'assert_template' extracted in rails 5
-  gem 'rails-controller-testing', '~> 1.0.1'
+  # TODO: 1.0.1 still contains an issue that breaks helper inclusion in view specs
+  # Constrain value once new version released.
+  # More information: https://github.com/rspec/rspec-rails/issues/1644
+  gem 'rails-controller-testing', git: 'https://github.com/rails/rails-controller-testing/'
 
   gem 'capybara', '~> 2.8.1'
   gem 'capybara-screenshot', '~> 1.0.13'

Gemfile.lock

@@ -82,6 +82,15 @@ GIT
       rails (~> 5.0.0)
       rubyzip
 
+GIT
+  remote: https://github.com/rails/rails-controller-testing/
+  revision: d942a5d239a4b34cf93e86ca35e49f464e516ede
+  specs:
+    rails-controller-testing (1.0.1)
+      actionpack (~> 5.x)
+      actionview (~> 5.x)
+      activesupport (~> 5.x)
+
 GIT
   remote: https://github.com/rspec/rspec-activemodel-mocks
   revision: 14da7397f4c1f297fa9b8be3519419ba9b881577
@@ -421,10 +430,6 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 5.0.0.1)
       sprockets-rails (>= 2.0.0)
-    rails-controller-testing (1.0.1)
-      actionpack (~> 5.x)
-      actionview (~> 5.x)
-      activesupport (~> 5.x)
     rails-dom-testing (2.0.1)
       activesupport (>= 4.2.0, < 6.0)
       nokogiri (~> 1.6.0)
@@ -665,7 +670,7 @@ DEPENDENCIES
   rack_session_access
   rails (~> 5.0.0)
   rails-angular-xss!
-  rails-controller-testing (~> 1.0.1)
+  rails-controller-testing!
   rails-observers!
   rails_12factor
   rails_autolink (~> 1.1.6)