Fix terraform feature OpenPGP error on Ubuntu 26.04 (resolute)

[Copilot]

The terraform feature fails on Ubuntu 26.04 ("Resolute Raccoon") with No valid OpenPGP data found. Ubuntu Noble and Debian Trixie already use a newer GPG key/repo format via NEW_GPG_CODENAMES, but resolute was missing from that list and fell back to the incompatible legacy path.

Changes

• src/terraform/install.sh: Add resolute to NEW_GPG_CODENAMES so the new GPG repo setup path is used on Ubuntu 26.04; update related comments.

  # This is because ubuntu noble, ubuntu resolute and debian trixie don't support the old format of GPG keys and validation
  NEW_GPG_CODENAMES="trixie noble resolute"

• test/terraform/scenarios.json: Add install_in_ubuntu_resolute and install_in_ubuntu_resolute_sentinel scenarios against the ubuntu:resolute image (matching the image-tag convention used by other features).

• test/terraform/install_in_ubuntu_resolute.sh / install_in_ubuntu_resolute_sentinel.sh: New test scripts mirroring the noble equivalents, omitting the vscode user check since the plain ubuntu:resolute image has no such user.

Notes

ubuntu:26.04 reports VERSION_CODENAME=resolute; with this change the detection logic sets IS_GPG_NEW=1, activating the workaround.

[Kaniska244]

@copilot Can you use mcr.microsoft.com/devcontainers/base:resolute base images for resolute tests instead of ubuntu:resolute? The current base image appears to have utilities missing.

[Copilot]

@copilot Can you use mcr.microsoft.com/devcontainers/base:resolute base images for resolute tests instead of ubuntu:resolute? The current base image appears to have utilities missing.

Switched both resolute scenarios to mcr.microsoft.com/devcontainers/base:resolute and restored the vscode user check in the test scripts to match the noble tests. Done in 5cb8a68.

[Kaniska244]

@copilot Do a version bump for the terraform feature for this change.

[Copilot]

@copilot Do a version bump for the terraform feature for this change.

Bumped the terraform feature version from 1.4.3 to 1.4.4 in 046a44c.