OCPBUGS-53425: Make mtu-migration run after wait-for-primary-ip

When NMState is used to manage br-ex, we need mtu-migration to run
after the wait-for-primary-ip service so we know the network is
ready to go. If not, the script can have trouble getting the current
configuration.

Author: cybertron

Diff for: templates/common/_base/units/mtu-migration.service.yaml

@@ -6,7 +6,7 @@ contents: |
   Description=Configures interfaces and routes with temporary MTUs during MTU migration
   Requires=openvswitch.service ovs-configuration.service
   Wants=NetworkManager-wait-online.service
-  After=NetworkManager-wait-online.service openvswitch.service network.service ovs-configuration.service
+  After=NetworkManager-wait-online.service openvswitch.service network.service ovs-configuration.service wait-for-primary-ip.service
   Before=kubelet-dependencies.target node-valid-hostname.service
 
   [Service]
@@ -29,4 +29,4 @@ contents: |
   [Install]
   WantedBy=kubelet-dependencies.target
 
-{{ end }}{{ end }}
+{{ end }}{{ end }}