The value of vRtrMvpnExportPolicyUnicast specifies whether unicast
vrf-export policy is used for the Multicast VPN (MVPN) as well.
If the value is 'true', vRtrExportPolicy1 through vRtrExportPolicy5
is used for MVPN.
If the value is 'false', vRtrMvpnExportPolicy1 through
vRtrMvpnExportPolicy5 is used for MVPN.