Use static IP address instead of dhcp for admin network
* pass netcfg/choose_interface parameter for Ubuntu and Centos\RedHat
* pass to orchestrator static ip instead of dhcp for admin network
* fix ip order for admin ips, it was broken for deployment
  and provisioning assigned other ip addresses
* small stylistic refactoring of network manager
* fix test for capacity which some times fails

Change-Id: I8344a08bc7323cfb6ebc2c5f0dc113cc74fc62ef
Merge "Use static IP address instead of dhcp for admin network * pass netcfg/choose_interface parameter for Ubuntu and Centos\RedHat * pass to orchestrator static ip instead of dhcp for admin network * fix ip order for admin ips, it was broken for deployment   and provisioning assigned other ip addresses * small stylistic refactoring of network manager * fix test for capacity which some times fails"