feat: New feature: OpenTofu

Author: Dennis Plöger

.vscode/launch.json

@@ -0,0 +1,32 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Run Tests",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "cwd": "/Users/dennisploger/Documents/code/dodevops/cloudcontrol",
+            "program": "cmd/tests/test-features.go",
+            "args": [
+                "-f",
+                "simple",
+                "-i",
+                "ghcr.io/dodevops/cloudcontrol-simple:local",
+                "-t",
+                "/Users/dennisploger/work/testbed",
+                "-p",
+                "linux/arm64",
+                "-l",
+                "debug",
+                "-g",
+                "/Users/dennisploger/Downloads/goss-linux-arm64",
+                "-n",
+                "opentofu"
+            ]
+        }
+    ]
+}

feature/opentofu/feature.yaml

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+icon: "📦"
+title: "Opentofu"
+description: "Installs and configures [Opentofu](https://opentofu.org/)"
+configuration:
+    - |
+        Add a volume mount to the `volumes:` section of docker compose like this:
+             (...)
+             volumes:
+                 - "<path-to-opentofu>:/opentofu"
+    - |
+        If you used the browser based login in gcloud, you'll probably need to authenticate using the application-default
+        login using the gcloud cli by running
+        
+            gcloud auth application-default login
+requiresVersion: true

feature/opentofu/goss.unsetversion/.will-fail

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+The opentofu feature requires a version set using OPENTOFU_VERSION

feature/opentofu/goss/.env

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+OPENTOFU_VERSION=1.10.5
+DEBUG_opentofu=true

feature/opentofu/goss/goss.yaml

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+command:
+    terraform:
+        exec: "/home/cloudcontrol/bin/tofu --version"
+        exit-status: 0
+        stdout:
+            - "OpenTofu v1.10.5"

feature/opentofu/install.sh

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+. /feature-installer-utils.sh
+
+if [ -z "${OPENTOFU_VERSION}" ]
+then
+  echo "The terraform feature requires a version set using OPENTOFU_VERSION. See https://github.com/opentofu/opentofu/releases for valid versions"
+  exit 1
+fi
+
+OPENTOFU_VERSION=$(checkAndCleanVersion "${OPENTOFU_VERSION}")
+
+TEMPDIR=$(mktemp -d)
+cd "${TEMPDIR}" || exit
+
+execHandle "Downloading opentofu" curl -f -s -L "https://github.com/opentofu/opentofu/releases/download/v${OPENTOFU_VERSION}/tofu_${OPENTOFU_VERSION}_linux_$(getPlatform).zip" --output opentofu.zip
+execHandle "Unpacking opentofu"  unzip opentofu.zip
+execHandle "Installing opentofu" mv tofu /home/cloudcontrol/bin/tofu
+
+cd - &>/dev/null || exit
+rm -rf "${TEMPDIR}"