Remove deprecated network config options

Below network config options have been deprecated with
new names long back
- Ied68c0326cf891a4e6eb3db51dc5f43241e4b8d2

    - 'tenant_network_cidr' -> 'project_network_cidr'
    - 'tenant_network_mask_bits' -> 'project_network_mask_bits'
    - 'tenant_network_v6_cidr' -> 'project_network_v6_cidr'
    - 'tenant_network_v6_mask_bits' -> 'project_network_v6_mask_bits'
    - 'tenant_networks_reachable' -> 'project_networks_reachable'

This patch removes them from tempest conf.
Devstack already use the new config options.

Change-Id: Ic0c39e607265f1b8e60caaacd11912ba9d558e01
Depends-On: I31f83ec70b8803a29a7be765661517d890ffd6f1
diff --git a/releasenotes/notes/remove-deprecated-network-config-options-f9ce276231578fe6.yaml b/releasenotes/notes/remove-deprecated-network-config-options-f9ce276231578fe6.yaml
new file mode 100644
index 0000000..e445fb3
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-network-config-options-f9ce276231578fe6.yaml
@@ -0,0 +1,11 @@
+---
+upgrade:
+  - |
+    Below deprecated network config options have been removed.
+    Those config options already been renamed to below meaningful names.
+
+    - ``tenant_network_cidr`` (removed) -> ``project_network_cidr``
+    - ``tenant_network_mask_bits`` (removed) -> ``project_network_mask_bits``
+    - ``tenant_network_v6_cidr`` (removed) -> ``project_network_v6_cidr``
+    - ``tenant_network_v6_mask_bits`` (removed) -> ``project_network_v6_mask_bits``
+    - ``tenant_networks_reachable`` (removed) -> ``project_networks_reachable``
diff --git a/tempest/config.py b/tempest/config.py
index fe8c175..b7312fd 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -537,23 +537,18 @@
                         'publicURL', 'adminURL', 'internalURL'],
                help="The endpoint type to use for the network service."),
     cfg.StrOpt('project_network_cidr',
-               deprecated_name='tenant_network_cidr',
                default="10.100.0.0/16",
                help="The cidr block to allocate project ipv4 subnets from"),
     cfg.IntOpt('project_network_mask_bits',
-               deprecated_name='tenant_network_mask_bits',
                default=28,
                help="The mask bits for project ipv4 subnets"),
     cfg.StrOpt('project_network_v6_cidr',
-               deprecated_name='tenant_network_v6_cidr',
                default="2003::/48",
                help="The cidr block to allocate project ipv6 subnets from"),
     cfg.IntOpt('project_network_v6_mask_bits',
-               deprecated_name='tenant_network_v6_mask_bits',
                default=64,
                help="The mask bits for project ipv6 subnets"),
     cfg.BoolOpt('project_networks_reachable',
-                deprecated_name='tenant_networks_reachable',
                 default=False,
                 help="Whether project networks can be reached directly from "
                      "the test client. This must be set to True when the "