Bundler will fail when it can't find these locally

--- a/Gemfile
+++ b/Gemfile
@@ -245,87 +245,66 @@
   gem 'influxdb', '~> 0.2', require: false
 end
 
-group :development do
-  gem 'foreman', '~> 0.78.0'
-  gem 'brakeman', '~> 3.3.0', require: false
-
-  gem 'letter_opener_web', '~> 1.3.0'
-  gem 'rerun', '~> 0.11.0'
-  gem 'bullet', '~> 5.2.0', require: false
-  gem 'rblineprof', '~> 0.3.6', platform: :mri, require: false
-  gem 'web-console', '~> 2.0'
-
-  # Better errors handler
-  gem 'better_errors', '~> 1.0.1'
-  gem 'binding_of_caller', '~> 0.7.2'
-
-  # Docs generator
-  gem 'sdoc', '~> 0.3.20'
-
-  # thin instead webrick
-  gem 'thin', '~> 1.7.0'
-end
-
-group :development, :test do
-  gem 'byebug', '~> 8.2.1', platform: :mri
-  gem 'pry-rails', '~> 0.3.4'
-
-  gem 'awesome_print', '~> 1.2.0', require: false
-  gem 'fuubar', '~> 2.0.0'
-
-  gem 'database_cleaner',   '~> 1.5.0'
-  gem 'factory_girl_rails', '~> 4.6.0'
-  gem 'rspec-rails',        '~> 3.5.0'
+group :development, optional: true do
+#  gem 'byebug', '~> 8.2.1', platform: :mri
+#  gem 'pry-rails', '~> 0.3.4'
+#
+#  gem 'awesome_print', '~> 1.2.0', require: false
+#  gem 'fuubar', '~> 2.0.0'
+
+  gem 'database_cleaner',   '~> 1.5'
+  gem 'factory_girl_rails', '~> 4.6'
+  gem 'rspec-rails',        '~> 3.4'
   gem 'rspec-retry',        '~> 0.4.5'
-  gem 'spinach-rails',      '~> 0.2.1'
-  gem 'spinach-rerun-reporter', '~> 0.0.2'
+#  gem 'spinach-rails',      '~> 0.2.1'
+#  gem 'spinach-rerun-reporter', '~> 0.0.2'
 
   # Prevent occasions where minitest is not bundled in packaged versions of ruby (see #3826)
   gem 'minitest', '~> 5.7.0'
 
   # Generate Fake data
-  gem 'ffaker', '~> 2.0.0'
+  gem 'ffaker', '~> 2.0'
 
-  gem 'capybara',            '~> 2.6.2'
-  gem 'capybara-screenshot', '~> 1.0.0'
-  gem 'poltergeist',         '~> 1.9.0'
-
-  gem 'teaspoon', '~> 1.1.0'
-  gem 'teaspoon-jasmine', '~> 2.2.0'
-
-  gem 'spring',                   '~> 1.7.0'
-  gem 'spring-commands-rspec',    '~> 1.0.4'
-  gem 'spring-commands-spinach',  '~> 1.1.0'
-  gem 'spring-commands-teaspoon', '~> 0.0.2'
-
-  gem 'rubocop', '~> 0.41.2', require: false
-  gem 'rubocop-rspec', '~> 1.5.0', require: false
-  gem 'scss_lint', '~> 0.47.0', require: false
-  gem 'simplecov', '0.12.0', require: false
-  gem 'flog', '~> 4.3.2', require: false
-  gem 'flay', '~> 2.6.1', require: false
-  gem 'bundler-audit', '~> 0.5.0', require: false
+  gem 'capybara',            '~> 2.6', '>= 2.6.2'
+  gem 'capybara-screenshot', '~> 1.0'
+  gem 'poltergeist',         '~> 1.9'
+
+#  gem 'teaspoon', '~> 1.1.0'
+#  gem 'teaspoon-jasmine', '~> 2.2.0'
+
+#  gem 'spring',                   '~> 1.7.0'
+#  gem 'spring-commands-rspec',    '~> 1.0.4'
+#  gem 'spring-commands-spinach',  '~> 1.1.0'
+#  gem 'spring-commands-teaspoon', '~> 0.0.2'
+
+#  gem 'rubocop', '~> 0.41.2', require: false
+#  gem 'rubocop-rspec', '~> 1.5.0', require: false
+#  gem 'scss_lint', '~> 0.47.0', require: false
+#  gem 'simplecov', '0.12.0', require: false
+#  gem 'flog', '~> 4.3.2', require: false
+#  gem 'flay', '~> 2.6.1', require: false
+#  gem 'bundler-audit', '~> 0.5.0', require: false
 
-  gem 'benchmark-ips', '~> 2.3.0', require: false
+#  gem 'benchmark-ips', '~> 2.3.0', require: false
 
-  gem 'license_finder', '~> 2.1.0', require: false
-  gem 'knapsack', '~> 1.11.0'
+#  gem 'license_finder', '~> 2.1.0', require: false
+#  gem 'knapsack', '~> 1.11.0'
 end
 
-group :test do
-  gem 'shoulda-matchers', '~> 2.8.0', require: false
-  gem 'email_spec', '~> 1.6.0'
-  gem 'json-schema', '~> 2.6.2'
-  gem 'webmock', '~> 1.21.0'
-  gem 'test_after_commit', '~> 0.4.2'
-  gem 'sham_rack', '~> 1.3.6'
+group :test, optional: true do
+  gem 'shoulda-matchers', '~> 2.8', require: false
+  gem 'email_spec', '~> 1.6'
+  gem 'json-schema', '~> 2.6', '>= 2.6.2'
+  gem 'webmock', '~> 1.21'
+#  gem 'test_after_commit', '~> 0.4.2'
+#  gem 'sham_rack', '~> 1.3.6'
 end
 
 group :production do
   gem 'gitlab_meta', '7.0'
 end
 
-gem 'newrelic_rpm', '~> 3.16'
+#gem 'newrelic_rpm', '~> 3.16'
 
 gem 'octokit', '~> 4.3'