[Fuel-UI] Network settings verification error is not displayed in UI

[Bulat Gaifullin]

Steps to reproduce:
1. create new environment with default settings.
2. Go to page "Networks"
3. Set IP ranges 172.16.0.2 - 172.16.0.5
4. Click button "Save settings"

Expected result:
  The error "There is not enough IP addresses" is displayed in UI
Actual result:
  No error in UI and the settings is not saved.

{"release_versions": {"2015.1.0-8.0": {"VERSION": {"fuel-upgrade_sha": "1e894e26d4e1423a9b0d66abd6a79505f4175ff6", "fuel-createmirror_sha": "5b61266e19eb7cdc745fea7a7d97c90f2515c921", "shotgun_sha": "25dd78a3118267e3616df0727ce746e7dead2d67", "api": "1.0", "fuelmain_sha": "b9b39ee9d3bbdb1883d924840ab691b95e1ef4d1", "astute_sha": "687458e949dedfa6877e3a2e683f8ee0c1cbd43c", "fuel-ostf_sha": "25c87380395f2e42ca01ea6357b72d4407ff4201", "openstack_version": "2015.1.0-8.0", "build_id": "108", "fuelmenu_sha": "153c91e884a4601d30f8ebe3349170f96e3456e2", "build_number": "108", "fuel-library_sha": "01272e0a719c940ef3df5b4167990ff811da1b10", "fuel-nailgun-agent_sha": "00b4b11553c250f22c0079fb74c8b782dcb7b740", "fuel-nailgun_sha": "af02bd8f9aac1a1007f3ce17e5d7842853bd7758", "fuel-agent_sha": "9da73b497be5f91cb79f91e74d73eb0525be1c71", "production": "docker", "network-checker_sha": "518f7ef2706e564950469435f7cf27df175e1b27", "feature_groups": ["mirantis"], "release": "8.0", "python-fuelclient_sha": "555eeac8810c36b0616f5d12277e9099a53bb338"}}}, "fuel-upgrade_sha": "1e894e26d4e1423a9b0d66abd6a79505f4175ff6", "fuel-createmirror_sha": "5b61266e19eb7cdc745fea7a7d97c90f2515c921", "shotgun_sha": "25dd78a3118267e3616df0727ce746e7dead2d67", "api": "1.0", "fuelmain_sha": "b9b39ee9d3bbdb1883d924840ab691b95e1ef4d1", "astute_sha": "687458e949dedfa6877e3a2e683f8ee0c1cbd43c", "fuel-ostf_sha": "25c87380395f2e42ca01ea6357b72d4407ff4201", "openstack_version": "2015.1.0-8.0", "build_id": "108", "fuelmenu_sha": "153c91e884a4601d30f8ebe3349170f96e3456e2", "build_number": "108", "auth_required": true, "fuel-library_sha": "01272e0a719c940ef3df5b4167990ff811da1b10", "fuel-nailgun-agent_sha": "00b4b11553c250f22c0079fb74c8b782dcb7b740", "fuel-nailgun_sha": "af02bd8f9aac1a1007f3ce17e5d7842853bd7758", "fuel-agent_sha": "9da73b497be5f91cb79f91e74d73eb0525be1c71", "production": "docker", "network-checker_sha": "518f7ef2706e564950469435f7cf27df175e1b27", "feature_groups": ["mirantis"], "release": "8.0", "python-fuelclient_sha": "555eeac8810c36b0616f5d12277e9099a53bb338"}

[Bulat Gaifullin (bulat.gaifullin)]

API REQUEST:
http://ws-bg/api/clusters/2/network_configuration/neutron

BODY:

{"networks":[{"name":"fuelweb_admin","ip_ranges":[["10.20.0.3","10.20.0.254"]],"id":1,"meta":{"unmovable":true,"use_gateway":true,"notation":"ip_ranges","render_addr_mask":null,"render_type":null,"map_priority":0,"configurable":false},"vlan_start":null,"cidr":"10.20.0.0/24","group_id":null,"gateway":"10.20.0.2"},{"name":"public","ip_ranges":[["172.16.0.2","172.16.0.5"]],"id":6,"meta":{"vips":["haproxy","vrouter"],"name":"public","notation":"ip_ranges","render_type":null,"map_priority":1,"configurable":true,"floating_range_var":"floating_ranges","use_gateway":true,"vlan_start":null,"render_addr_mask":"public","cidr":"172.16.0.0/24","ip_range":["172.16.0.2","172.16.0.126"]},"vlan_start":null,"cidr":"172.16.0.0/24","group_id":2,"gateway":"172.16.0.1"},{"name":"storage","ip_ranges":[["192.168.1.1","192.168.1.254"]],"id":8,"meta":{"name":"storage","notation":"cidr","render_type":"cidr","map_priority":2,"configurable":true,"use_gateway":false,"vlan_start":102,"render_addr_mask":"storage","cidr":"192.168.1.0/24"},"vlan_start":102,"cidr":"192.168.1.0/24","group_id":2,"gateway":null},{"name":"management","ip_ranges":[["192.168.0.1","192.168.0.254"]],"id":7,"meta":{"vips":["haproxy","vrouter"],"name":"management","notation":"cidr","render_type":"cidr","map_priority":2,"configurable":true,"use_gateway":false,"vlan_start":101,"render_addr_mask":"internal","cidr":"192.168.0.0/24"},"vlan_start":101,"cidr":"192.168.0.0/24","group_id":2,"gateway":null},{"name":"private","ip_ranges":[],"id":9,"meta":{"name":"private","notation":null,"render_type":null,"map_priority":2,"neutron_vlan_range":true,"use_gateway":false,"vlan_start":null,"render_addr_mask":null,"configurable":false,"seg_type":"vlan"},"vlan_start":null,"cidr":null,"group_id":2,"gateway":null}],"networking_parameters":{"configuration_template":null,"floating_ranges":[["172.16.0.130","172.16.0.254"]],"dns_nameservers":["8.8.4.4","8.8.8.8"],"net_l23_provider":"ovs","base_mac":"fa:16:3e:00:00:00","internal_gateway":"192.168.111.1","internal_cidr":"192.168.111.0/24","gre_id_range":[2,65535],"vlan_range":[1000,1030],"segmentation_type":"vlan"}}

RESPONSE
Not enough free IP addresses in ranges [172.16.0.2-172.16.0.5] of 'public' network

RESPONSE_HEADERS:
Content-Type: "text/html"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/249297

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/249297
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=66535927957f377fe3af5796bd2b980f895c49e3
Submitter: Jenkins
Branch: master

commit 66535927957f377fe3af5796bd2b980f895c49e3
Author: Alexandra Morozova <email address hidden>
Date: Tue Dec 1 16:31:34 2015 +0100

    Showing network configuration saving errors

     - creating a fake check_networks task in case of error
      received from server
    - added functional test for data validation error appearence

    Closes-bug: #1514501
    Change-Id: Ib3bd852c262549b00dcea58ad53f4d47d20ca33e

[Julia Aranovich (jkirnosova)]

To test the issue you also click Use whole CIDR checkbox for Public network and try to save the configuraion.
There is a new logic on backend to calculate is amount of addresses in range enough or not.

[Anastasia Palkina (apalkina)]

Verified on ISO #284

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "8.0"
  api: "1.0"
  build_number: "284"
  build_id: "284"
  fuel-nailgun_sha: "eb187d0eed96226ca0d8c4513ffcafc4d09dee62"
  python-fuelclient_sha: "f96659066e522e28b389de3cc685f6f2aacca3da"
  fuel-agent_sha: "2f18b7596bc7da79d2f28c34f42620b2090d8a35"
  fuel-nailgun-agent_sha: "a33a58d378c117c0f509b0e7badc6f0910364154"
  astute_sha: "e8c753d6ce1405df78d032e88c0d5a1c6f3d17ce"
  fuel-library_sha: "15d966e164a8b8f7d94c70863bd1cc4990703ec8"
  fuel-ostf_sha: "632730169e8c01afe7fd5d78a898f00d4646358b"
  fuel-mirror_sha: "31b9df814960ec69b644ca9b689dacec0c7e10a1"
  fuelmenu_sha: "680b720291ff577f4c058cee25f85e563c96312e"
  shotgun_sha: "a0bd06508067935f2ae9be2523ed0d1717b995ce"
  network-checker_sha: "a3534f8885246afb15609c54f91d3b23d599a5b1"
  fuel-upgrade_sha: "1e894e26d4e1423a9b0d66abd6a79505f4175ff6"
  fuelmain_sha: "1577a306c2c9e7bd12f28c0e16cf3652997da004"