Deprecate unnecessary variables

It is really unlikely to change these variables:
``tempest_network_tenant_network_cidr``, ``tempest_network_tenant_network_mask_bits``
and ``tempest_fatal_deprecations``

To keep tempest role as simple as it is possible, we should deprecate them.
They still can be changed using ``tempest_tempest_conf_overrides``.

Change-Id: Ia95f10c3548a5773c286e7d7075b71861fcef28b

defaults/main.yml

@@ -121,16 +121,11 @@ tempest_test_extra_test: []
 # Defaults to tempest_test_blacklist for backwards compatibility and migration purposes.
 tempest_test_excludelist: "{{ tempest_test_blacklist | default([]) }}"
 
-# Toggle fatal deprecations
-tempest_fatal_deprecations: False
-
 # Private network configuration
 # Currently supports 2 types
 # vlan - will need to make sure your seg id and subnet cidr are correct
 # vxlan - default, can change subnet cidr and seg id
 
-# This needs to coincide with tempest_network_tenant_network_cidr and
-# tempest_network_tenant_network_mask_bits below
 tempest_private_net_name: "private"
 tempest_private_subnet_name: "private-subnet"
 tempest_private_subnet_cidr: "192.168.74.0/28"
@@ -167,8 +162,6 @@ tempest_compute_console_output_enabled: True
 tempest_compute_resize_enabled: True
 tempest_compute_snapshot_enabled: True
 tempest_compute_change_password: False
-tempest_network_tenant_network_cidr: "192.168.74.0/24"
-tempest_network_tenant_network_mask_bits: 28
 tempest_network_ping_gateway: False
 
 tempest_dashboard_url: "https://{{ external_lb_vip_address | default('127.0.0.1') }}/"

releasenotes/notes/remove-unnecessary-vars-2b29b9fd5c7ac06a.yaml

@@ -0,0 +1,6 @@
+---
+deprecations:
+  - variable ``tempest_network_tenant_network_cidr`` has been deprecated
+  - variable ``tempest_network_tenant_network_mask_bits`` has been deprecated
+  - variable ``tempest_fatal_deprecations`` has been deprecated
+

templates/tempest.conf.j2

@@ -4,7 +4,6 @@
 # Disable stderr logging
 use_stderr = False
 debug = {{ debug }}
-fatal_deprecations = {{ tempest_fatal_deprecations }}
 log_file = {{ tempest_log_dir}}/tempest.log
 
 
@@ -92,8 +91,6 @@ api_v2 = {{ tempest_image_api_v2_enabled }}
 
 [network]
 endpoint_type = internalURL
-project_network_cidr = {{ tempest_network_tenant_network_cidr }}
-project_network_mask_bits = {{ tempest_network_tenant_network_mask_bits }}
 project_networks_reachable = false
 public_network_id = {{ tempest_neutron_public_network_id }}
 floating_network_name = {{ tempest_public_net_name }}