nixosTests.ec2-config: avoid an evaluation problem
nixosTests.ec2-config: avoid an evaluation problem

The problem was introduced by commit 97a32bc (within PR #79696).
nixos/tests/common/ec2.nix:6:17 called with unexpected argument 'meta'

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs