Merge pull request #1240 from renjingxiao/align-uni01alpha-physnet-mtu

Align uni01alpha adoption NeutronGlobalPhysnetMtu with default

Author: openshift-merge-bot[bot]

scenarios/uni01alpha/config_download.yaml

@@ -60,7 +60,7 @@ parameter_defaults:
   ControllerCount: 3
   ComputeCount: 2
   NetworkerCount: 3
-  NeutronGlobalPhysnetMtu: 1350
+  NeutronGlobalPhysnetMtu: 1500
   CinderLVMLoopDeviceSize: 20480
   CloudName: overcloud.localdomain
   CloudNameInternal: overcloud.internalapi.localdomain