Added the following pages for the NFD up version installation.
1. Install Node Feature Discovery (NFD) StarlingX Application
2. Uninstall Node Feature Discovery (NFD) StarlingX Application
3. Removed the page "Run the node feature discovery helm chart" from the repo and index as well.
Change-Id: I9beda664b01a0d8644cd7683f5045d6f275cf5cb
Signed-off-by: Dinesh Neelapu <dinesh.neelapu@windriver.com>