Add more env details into statistics snapshot

Following items are added:
* cluster attributes: common, storage, networking parameters, additional components,
  'vcenter', 'assign_public_to_all_nodes', 'syslog_transport', 'provision_method',
  'kernel_params', 'vlan_splinters'
* cluster parameters: 'net_provider', 'fuel_version', 'is_customized'
* node groups: 'id', 'node_id'
* node parameters: 'error_type', 'online', 'platform_name', 'pending_addition',
  'pending_deletion', 'pending_roles', 'nic_interfaces' (IDs only),
  'bond_interfaces' (IDs and slaves IDs)

Change-Id: I5b015e204c8a4777fcfb22f9a2bfe7e2c51ea992
Closes-Bug: #1393386
Merge "Add more env details into statistics snapshot"