Trying to ingore races related to Nova + restoring missing benchmark

Seems like Nova has some fix related to checking default security group
to avoid it we can add more tenants in 2 benchmarks that are failing
boot_and_bounce_server and boot_and_resize

Restore nova-boot with nics

Change-Id: If625910a581afba0224e4ac591373d132d7f8efd
Merge "Trying to ingore races related to Nova + restoring missing benchmark"