[nancy][gros]Add Gros cluster into master

added 38 commits

• a7d8d91f...80f8ef75 - 28 commits from branch master
• d7221c92 - [nancy][gros] Generate JSON files in data directory
• 40334b0f - [nancy][gros] update mac addresses for nodes
• 404e9a97 - [nancy][gros] Add production switch sgros1 and sgros2
• ff009152 - [nancy][gros] net_names_mapping
• f135b051 - [nancy][gros] Add nodes config from g5kcheck
• 16372493 - [nancy][gros] Edit firmware_version for mlx5_core
• 974a4d43 - [nancy][gros] Delete gros_ip.yaml.erb
• a59659c3 - [nancy][gros] Add vlan definition
• 20ed066c - [nancy][gros] Kavlan config before gen puppet
• a323bc5e - [nancy][gros] Add /tmp in git ignore

Compare with previous version

merged

mentioned in commit 20fa62ed