v2.12.0

Changelog

• 5273cb0 [chore] update error handler for api create server - error handler for image not found - error handler for delete virtual address in use
• 80d34cd Merge pull request #90 from vngcloud/lb-cert
• 4685deb 🌱 add: lb cert
• fa52770 🌱 add: lb cert
• 9e6a25c [docs] update docs
• 92b5ab4 [docs] update docs
• 6b93312 [docs] update docs
• bcafd3f [docs] update docs