Move vxlan interface settings to interfaces vpp vxlan. Create LCP pair kernel interface automatically
set interfaces vpp vxlan <vppvxlanN> description <txt> set interfaces vpp vxlan <vppvxlanN> disable [valueless] set interfaces vpp vxlan <vppvxlanN> remote <ipv4> set interfaces vpp vxlan <vppvxlanN> source-address <ipv4> set interfaces vpp vxlan <vppvxlanN> vni <u32:0-16777214>