playbooks docs

See merge request gfarhiri/mitik-mgmt-mod!2

add inventory, change data transfer to more organized folders structure, set...

See merge request gfarhiri/mitik-mgmt-mod!1

# Conflicts:
#   README.md

change hostname to ssx-sx, prevent reinstalling packages if they are already installed, add relative paths

add inventory, change data transfer to more organized folders structure, set up files folder to store files to transfer to nodes and change NIC yml accordingly