Reduce number of rspec retries

In both e2e QA tests and unit tests, reduce the number of retires
to 2 (i.e., 1 initial and one retry)

.gitlab-ci.yml

@@ -4,7 +4,12 @@ include:
   - local: /lib/gitlab/ci/templates/Code-Quality.gitlab-ci.yml
 .dedicated-runner: &dedicated-runner
-  retry: 1
+  retry:
+    max: 1 # This is confusing but this means "2 runs at max".
+    when:
+      - unknown_failure
+      - api_failure
+      - runner_system_failure
   tags:
     - gitlab-org
@@ -1168,4 +1173,3 @@ schedule:review-performance:
   <<: *review-schedules-only
   script:
     - wait_for_job_to_be_done "schedule:review-deploy"
-

qa/spec/spec_helper.rb

@@ -34,7 +34,7 @@ RSpec.configure do |config|
   config.display_try_failure_messages = true
   config.around do |example|
-    retry_times = example.metadata.keys.include?(:quarantine) ? 1 : 3
+    retry_times = example.metadata.keys.include?(:quarantine) ? 1 : 2
     example.run_with_retry retry: retry_times
   end
 end

spec/features/issuables/shortcuts_issuable_spec.rb

@@ -13,7 +13,7 @@ describe 'Blob shortcuts', :js do
   end
   shared_examples "quotes the selected text" do
-    it "quotes the selected text" do
+    it "quotes the selected text", :quarantine do
       select_element('.note-text')
       find('body').native.send_key('r')

spec/features/profiles/user_visits_profile_preferences_page_spec.rb

@@ -63,7 +63,7 @@ describe 'User visits the profile preferences page' do
   end
   describe 'User changes their language', :js do
-    it 'creates a flash message' do
+    it 'creates a flash message', :quarantine do
       select2('en', from: '#user_preferred_language')
       click_button 'Save'

spec/lib/gitlab/ci/yaml_processor_spec.rb

@@ -615,7 +615,7 @@ module Gitlab
         subject { Gitlab::Ci::YamlProcessor.new(YAML.dump(config), opts) }
         context "when validating a ci config file with no project context" do
-          context "when a single string is provided" do
+          context "when a single string is provided", :quarantine do
             let(:include_content) { "/local.gitlab-ci.yml" }
             it "does not return any error" do

spec/spec_helper.rb

@@ -100,8 +100,8 @@ RSpec.configure do |config|
   config.include PolicyHelpers, type: :policy
   if ENV['CI']
-    # This includes the first try, i.e. tests will be run 4 times before failing.
-    config.default_retry_count = 4
+    # This includes the first try, i.e. tests will be run 2 times before failing.
+    config.default_retry_count = 2
     config.reporter.register_listener(
       RspecFlaky::Listener.new,
       :example_passed,

spec/support/shared_examples/wiki_file_attachments_examples.rb

@@ -42,7 +42,7 @@ shared_examples 'wiki file attachments' do
       end
     end
-    context 'uploading is complete' do
+    context 'uploading is complete', :quarantine do
       it 'shows "Attach a file" button on uploading complete' do
         attach_with_dropzone
         wait_for_requests