vault plugin register does not explain how the -env argument can be used #1226
Description
vault plugin register(https://github.com/hashicorp/web-unified-docs/blob/main/content/vault/v1.21.x/content/docs/commands/plugin/register.mdx) has an argument for setting environment variables the plugin should receive, but it does not provide a format nor examples of how to use it.
Are we setting new variables? ie: vault plugin register -command=mycommand -env=MYVAR=MYDATA
Is it defining an env var vault should look for in it's own environment, and pass that to the plugin? ie: vault plugin register -command=mycommand -env=MY_VAR_SET_WHEN_VAULT_STARTED