The value of vRtrMvpnImportPolicyUnicast specifies whether unicast
vrf-import policy is used for the Multicast VPN (MVPN) as well.
If the value is 'true', vRtrImportPolicy1 through vRtrImportPolicy5
are used for MVPN.
If the value is 'false', vRtrMvpnImportPolicy1 through
vRtrMvpnImportPolicy5 are used for MVPN.