What's Changed

• Ensure global creds object is initialised when adding first cred by @knolleary in https://github.com/node-red/node-red/pull/4561
• Fix require of dns module by @knolleary in https://github.com/node-red/node-red/pull/4562
• Bump for 3.1.5 release by @knolleary in https://github.com/node-red/node-red/pull/4564

Full Changelog: https://github.com/node-red/node-red/compare/3.1.4...3.1.5