* VAULT-12940 test for templating user agent
* VAULT-12940 User agent work so far
* VAULT-12940 Vault Agent uses Vault Agent specific User-Agent header when issuing requests
* VAULT-12940 Clean-up and godocs
* VAULT-12940 changelog
* VAULT-12940 Fix test checking headers
* VAULT-12940 Fix test checking headers
* VAULT-12940 Fix test checking headers
* VAULT-12940 Fix test checking headers
* VAULT-12940 copy/paste typos
* VAULT-12940 improve comments, use make(http.Header)
* VAULT-12940 small typos and clean-up
Move version out of SDK. For now it's a copy rather than move: the part not addressed by this change is sdk/helper/useragent.String, which we'll want to remove in favour of PluginString. That will have to wait until we've removed uses of useragent.String from all builtins.
* Add useragent package
This helper provides a consistent user-agent header for Vault, taking into account different versions.
* Add user-agent headers to spanner and gcs
Violet Hynes