Add scenario for booting vm with security groups

Name of new scenario:
  boot-and-delete-server-with-secgroups
Its plan:
  - create N security groups with M rules per group
  - [neutron-specific]: create network with 1 subnet(required to boot vm
    with security groups)
  - boot a VM with created security groups
  - get list of attached security groups to server
  - delete server
  - delete all security groups
  - [neutron-specific]: delete created network
  - check that all groups were attached to server

Also, action "nova.create_%s_rules_in_every_of_%s_security_group"
was renamed to "nova.create_%s_rules", because original name is too long
and doesn't clearly display the number of created rules.

Change-Id: I0c4d30ebf03195a5bcd68e87a6ba1d7756fc7fc0
Merge "Add scenario for booting vm with security groups"