Add flag snippet_count_check to GitAccessSnippet

lib/gitlab/git_access_snippet.rb

@@ -98,7 +98,10 @@ module Gitlab
 
     def check_single_change_access(change)
       Checks::SnippetCheck.new(change, logger: logger).validate!
-      Checks::PushFileCountCheck.new(change, repository: repository, limit: Snippet::MAX_FILE_COUNT, logger: logger).validate!
+
+      if Feature.enabled?(:snippet_count_check)
+        Checks::PushFileCountCheck.new(change, repository: repository, limit: Snippet::MAX_FILE_COUNT, logger: logger).validate!
+      end
     rescue Checks::TimedLogger::TimeoutError
       raise TimeoutError, logger.full_message
     end

spec/lib/gitlab/git_access_snippet_spec.rb

@@ -209,6 +209,16 @@ describe Gitlab::GitAccessSnippet do
 
       expect { push_access_check }.to raise_forbidden('foo')
     end
+
+    context 'when feature flag :snippet_count_check is disabled' do
+      it 'does not check push file count' do
+        stub_feature_flags(snippet_count_check: false)
+
+        expect(Gitlab::Checks::PushFileCountCheck).not_to receive(:new)
+
+        expect { push_access_check }.not_to raise_error
+      end
+    end
   end
 
   private