FIX: create predefined networks.

Puppet resources 'tupe' must have :ensure parameter if type ensurable.
FIX: lost bridge_mappings for GRE segmentation
FIX: losted auth url
FIX order for creating networks, subnets and routers
FIX: segm.IDs and vlan_ranges for GRE ang flat
FIX: nameservers and enable_dhcp while creating subnet
remove unnided dependices. This dependences create in create_predefined_networks_and_routers()
create networks only on first controller
Merge pull request #688 from xenolog/Q32-fix-04

Multiple fixes for Quantum-net-creation procedure