The value of tBgpPGFlowspecValidate specifies whether validation of
received flow specification routes is enabled for this peer group.
When the value of tBgpPGFlowspecValidate is 'true', the flow routes
received from other peers are validated.
The default value of tBgpPGFlowspecValidate is 'false', which means
validation of received flow routes is disabled and all flow
specification routes are considered valid.