Do not remove /run/openvswitch folder

Neutron is using that folder for openvswitch stuff in devstack.

Change-Id: I711e51311687161efe2f49d3d28010791be24f29

tools/gate/funcs/kube.sh

@@ -136,7 +136,6 @@ function kubeadm_aio_clean {
       /var/lib/etcd \
       /var/etcd \
       /var/lib/kubelet/* \
-      /run/openvswitch \
       /var/lib/nova \
       ${HOME}/.kubeadm-aio/admin.conf \
       /var/lib/openstack-helm \

tools/kubeadm-aio/kubeadm-aio-launcher.sh

@@ -30,7 +30,6 @@ sudo rm -rfv \
     /var/lib/etcd \
     /var/etcd \
     /var/lib/kubelet/* \
-    /run/openvswitch \
     ${HOME}/.kubeadm-aio/admin.conf \
     /var/lib/nfs-provisioner || true