Implement a naming convention for `name` parameters in resources.

[robertdebock]

Resources have a name parameter, which differs over multiple files.

• Think of a naming convention, maybe: "vault-${var.vault_name}-${random_string.default.result}".
• Find all name parameters. (Not fully working, but a good start: grep -E 'name +=' *.tf.
• Implement naming convention.