Add 1.8 upgrade guide (#12186)

website/content/docs/upgrading/upgrade-to-1.8.0.mdx

@@ -0,0 +1,37 @@
+---
+layout: docs
+page_title: Upgrading to Vault 1.8.0 - Guides
+description: |-
+  This page contains the list of deprecations and important or breaking changes
+  for Vault 1.8.0. Please read it carefully.
+---
+
+# Overview
+
+This page contains the list of deprecations and important or breaking changes
+for Vault 1.8.0 compared to 1.7. Please read it carefully.
+
+## License Enhancements
+
+Licenses and EULA enhancements have been introduced in the Vault 1.8 release.
+These changes are important for Enterprise customers to review. They do not affect
+OSS users. Please see the [License](/docs/enterprise/license) documentation for more details.
+
+## Deprecations
+
+The following API endpoints have been deprecated and will be removed in a future release:
+
+* `sys/license` to manage licenses in storage; it is recommended to use
+   [License Autoloading](/docs/enterprise/license/autoloading) instead.
+
+* `/gcp/token/:roleset` and `/gcp/key/:roleset` paths for generating secrets for rolesets
+  in GCP Secrets. Use `/gcp/roleset/:roleset/token` and `/gcp/roleset/:roleset/key` instead.
+
+## Go Version
+
+Vault 1.8.0 is built with Go 1.16. Please review the [Go Release
+Notes](https://golang.org/doc/go1.16) for full details. Of particular note:
+
+- Go 1.16 has added support for darwin/arm64. Vault binaries for this platform are
+  now available supporting the Apple M1 CPU.
+

website/data/docs-nav-data.json

@@ -1616,6 +1616,10 @@
       {
         "title": "Upgrade to 1.7.0",
         "path": "upgrading/upgrade-to-1.7.0"
+      },
+      {
+        "title": "Upgrade to 1.8.0",
+        "path": "upgrading/upgrade-to-1.8.0"
       }
     ]
   },