Add FortiManager methods for address and service object handling

[patrikspiess]

For managing address objects and service objects we need some methods to get and delete address and service objects. These may include the following and maybe others/more:

• address groups

  • get_global_address_groups
  • get_global_address_group
  • delete_adom_address_group
  • delete_global_address_group

• addresses

  • get_global_addresses
  • get_global_address
  • delete_adom_address
  • delete_global_address

• service groups

  • get_global_service_groups
  • get_global_service_group
  • delete_adom_service_group
  • delete_global_service_group

• services

  • get_global_services
  • get_global_service
  • delete_adom_service
  • delete_global_service

These methods should all be tested and have an according cli command