ADD MTU settings and Neutron settings adjustment

This review moved MTU settings to the testenv files
and adds settings to adjust the Neutron settings
accordingly on the undercloud and overcloud.

Depends-On: I3106137cdb216ba593e4788f2a7f319669c8081c
Change-Id: I10a2a8df25e3110b6584b47dca693c19abeb4930

toci-quickstart/config/testenv/multinode-rdocloud.yml

@@ -19,6 +19,10 @@ toci_vxlan_networking_multinode: true
 vxlan_mtu: 1350
 hostname_correction: true # workaround restriction on toci images
 
+mtu: "{{ vxlan_mtu }}"
+undercloud_local_mtu: "{{ mtu }}"
+overcloud_neutron_global_physnet_mtu: "{{ mtu }}"
+
 ceph_use_fqdn: true
 
 # environment settings, not TRIPLEO-CI specific
@@ -47,4 +51,4 @@ ara_graphite_prefix: "test.tripleo.{{ lookup('env', 'STABLE_RELEASE')|default('m
 ara_graphite_server: 66.187.229.172
 
 #build-test packages
-artg_repos_dir: "{{ tripleo_root }}"
+artg_repos_dir: "{{ tripleo_root }}"

toci-quickstart/config/testenv/multinode.yml

@@ -14,6 +14,11 @@ dlrn_use_local_mirrors: true
 vxlan_networking: true
 hostname_correction: true # workaround restriction on toci images
 
+vxlan_mtu: 1350
+mtu: "{{ vxlan_mtu }}"
+undercloud_local_mtu: "{{ mtu }}"
+overcloud_neutron_global_physnet_mtu: "{{ mtu }}"
+
 # environment settings, not TRIPLEO-CI specific
 undercloud_local_interface: "br-ex" # related to osinfra network configuration
 flavor_args: ""

toci-quickstart/config/testenv/ovb.yml

@@ -57,8 +57,8 @@ host_network_interfaces:
   - eth1
   - "{% if network_isolation|default(true)|bool %}eth2{% endif %}"
 mtu_interface: "{{ host_network_interfaces|select()|list }}"
-undercloud_local_mtu: 1350
-overcloud_neutron_global_physnet_mtu: 1350
+undercloud_local_mtu: "{{ mtu }}"
+overcloud_neutron_global_physnet_mtu: "{{ mtu }}"
 floating_ip_cidr: >-
   {%- if network_isolation|default(true)|bool %}10.0.0.0/24
   {%- else %}192.168.24.0/24