[3.13] Vault OAuth2 support for authenticating to HashiCorp

[lena-larionova]

Jobs to be done (optional)

The vault entity will support OAuth2 for authentication to HashiCorp Vault.

Definition of done

• Update vault entity page to mention this support
• How-to guide

Information

https://konghq.atlassian.net/browse/KAG-7810
https://docs.google.com/document/d/1VOCHh0S8gtQDaxfi9ibD72ULwp_uzB_CdBsQ1JanJhI/edit?usp=sharing
https://konghq.aha.io/features/GTWY-308

Due date (optional)

3.13 GA.

Size

L

[lena-larionova]

Split this into two tickets.

[cloudjumpercat]

ssl_verify = true "Note: this would require the IdP ssl cert to be present in the Lua SSL trusted certificate. We should write this down in the user doc"