terraform-provider-vault: vault_github_team token_policies breaks policy mapping

Terraform Version

Terraform v0.11.13

• provider.vault v2.2.0

Affected Resource(s)

vault_github_team

Terraform Configuration Files

Before:

resource "vault_github_team" "sre" {
  backend  = "${vault_github_auth_backend.github.id}"
  team     = "sre"
  policies = ["admin"]
}

After:

resource "vault_github_team" "sre" {
  backend  = "${vault_github_auth_backend.github.id}"
  team     = "sre"
  token_policies = ["admin"]
}

Expected Behavior

When logging in with the correct github personal access token,

token_policies         ["default" "admin"]
policies                    ["default" "admin"]

Actual Behavior

Once the above code it applied to a vault instance, the “admin” policy is no longer bound to the token

token_policies         ["default"]
policies                    ["default"]

Reverting back from “token_policies” to “policies” will correct the behavior.