[ubuntu] Rename build scripts (#8866)

* [ubuntu] Rename build scripts

* [ubuntu] Change reboot to inline shell

* [ubuntu] Move disk space validation to pester tests

* [ubuntu] Rename helper and tests files

* [ubuntu] Changes to cleanup, post-deployment and r scripts

images/ubuntu/scripts/build/configure-image-data.sh

@@ -0,0 +1,32 @@
+#!/bin/bash -e
+################################################################################
+##  File:  configure-image-data.sh
+##  Desc:  Create a file with image data and documentation links
+################################################################################
+
+imagedata_file=$IMAGEDATA_FILE
+image_version=$IMAGE_VERSION
+image_version_major=${image_version/.*/}
+image_version_minor=$(echo $image_version | cut -d "." -f 2)
+os_name=$(lsb_release -ds | sed "s/ /\\\n/g")
+os_version=$(lsb_release -rs)
+image_label="ubuntu-${os_version}"
+version_major=${os_version/.*/}
+version_wo_dot=${os_version/./}
+github_url="https://github.com/actions/runner-images/blob"
+
+software_url="${github_url}/ubuntu${version_major}/${image_version_major}.${image_version_minor}/images/ubuntu/Ubuntu${version_wo_dot}-Readme.md"
+releaseUrl="https://github.com/actions/runner-images/releases/tag/ubuntu${version_major}%2F${image_version_major}.${image_version_minor}"
+
+cat <<EOF > $imagedata_file
+[
+  {
+    "group": "Operating System",
+    "detail": "${os_name}"
+  },
+  {
+    "group": "Runner Image",
+    "detail": "Image: ${image_label}\nVersion: ${image_version}\nIncluded Software: ${software_url}\nImage Release: ${releaseUrl}"
+  }
+]
+EOF