loadbalancer: delete non-used parameter

keepalived_localhost_ip params was not used.

Bug #237
loadbalancer: Add internal VIP support

- (option) Create an internal VIP (new VRRP instance in Keepalived)
- Rename old parameters to be used for the public VIP
- deprecate old parameters correctly and set them as public endpoint by
  default.

Bug #237
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
loadbalancer: add internal HAproxy binding

- (option) create HAproxy internal binding for OpenStack services
- warning if Galera Cluster is exposed on public network
- warning if Glance Registry is exposed on public network

Bug #237
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
loadbalancer: fail if VIP is incorrect

Fails the catalog if OpenStack or Galera IP are not in the Keepalived
VIP list.
It avoids configuration mistakes.

Bug #237

Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
loadbalancer: nicer tests
Merge pull request #449 from enovance/bug/237/emilien

Public & Internal endpoints support