Support Vault Credential Library Mapping Overrides (#287)

examples/resources/boundary_credential_library_vault/resource.tf

@@ -41,3 +41,30 @@ resource "boundary_credential_library_vault" "bar" {
 }
 EOT
 }
+
+resource "boundary_credential_library_vault" "baz" {
+  name                = "baz"
+  description         = "vault username password credential with mapping overrides"
+  credential_store_id = boundary_credential_store_vault.foo.id
+  path                = "my/secret/baz" # change to Vault backend path
+  http_method         = "GET"
+  credential_type     = "username_password"
+  credential_mapping_overrides = {
+    password_attribute = "alternative_password_label"
+    username_attribute = "alternative_username_label"
+  }
+}
+
+resource "boundary_credential_library_vault" "quz" {
+  name                = "quz"
+  description         = "vault ssh private key credential with mapping overrides"
+  credential_store_id = boundary_credential_store_vault.foo.id
+  path                = "my/secret/quz" # change to Vault backend path
+  http_method         = "GET"
+  credential_type     = "ssh_private_key"
+  credential_mapping_overrides = {
+    private_key_attribute            = "alternative_key_label"
+    private_key_passphrase_attribute = "alternative_passphrase_label"
+    username_attribute               = "alternative_username_label"
+  }
+}