get_scoping_objects was missing from the fake vcns
get_spoofguard_policies returned the wrong format
update_section_by_id was missing from the fake vcns
get_dfw_config was missing from the fake vcns
_get_section did not return the section name
get_security_group was missing from the fake vcns
list_security_groups was missing from the fake vcns
Change-Id: Id70a2ca9897dbe84ae02f01c542db53603057646