Add deb package to iso image

Adds stx-rook-ceph-migration-helm package to the iso making it
available for installation. Also adds README file for the repo.

Test Plan:
  PASS  - Build iso and check for the existence of the package

Closes-Bug: 2060688

Change-Id: Id0303cbd64cf0bf781062a1f0fadf2f22f82435c
Signed-off-by: Caio Correa <caio.correa@windriver.com>

README.md

@@ -0,0 +1,34 @@
+# rook-ceph
+Rook-ceph migration fluxCD app
+
+####  Top Level Directory Structure
+```bash
+├── rook-ceph    # Root Folder
+│   ├── bindep.txt
+│   ├── debian_build_layer.cfg
+│   ├── debian_iso_image.inc
+│   ├── debian_pkg_dirs
+│   ├── migration-rook-ceph-helm              # importing of upstream rook-ceph helm packages
+│   ├── python3-k8sapp-migration-rook-ceph    # lifecycle managemnt code to support flux apps
+│   ├── README.md
+│   ├── requirements.txt
+│   ├── stx-migration-rook-ceph-helm      # helm Package manager for the app
+│   ├── test-requirements.txt
+│   └── tox.ini
+```
+
+### About rook-ceph migration
+Rook is a Ceph orchestrator providing a containerized solution for Ceph Storage. This application targets compatibility with Ceph Nautilus using the last rook-ceph version (v1.7.11) available that has official support for it. For newer versions of ceph and rook-ceph, there's a [rook ceph app](https://opendev.org/starlingx/app-rook-ceph) available.
+
+### Installation Guide
+For instructions on how to build and install migration rook-ceph, follow the [StarlingX Rook Ceph Migration App installation guide](https://wiki.openstack.org/wiki/StarlingX/Containers/Applications/rook-ceph-migration).
+
+
+#### References
+[StarlingX](https://www.starlingx.io/)
+
+[Rook Ceph](https://rook.io/)
+
+[Rook Ceph 1.7 Documentation](https://rook.io/docs/rook/v1.7/)
+
+[Rook Ceph App](https://opendev.org/starlingx/app-rook-ceph)

debian_iso_image.inc

@@ -1 +1 @@
-#stx-migration-rook-ceph-helm
+stx-migration-rook-ceph-helm