Indicates whether OSPF should perform hitless restart using
grace LSAs. If OSPF is being deactivated, grace LSAs are sent
out to inform neighboring routers that we wish to undergo a
hitless restart.
If OSPF is being activated, we will attempt to restart
hitlessly, then set this field to 'false'. Therefore this field
needs to be explicitly set to 'true' each time planned hitless
restart is required.
This object is persistent and when written the entity SHOULD
save the change to non-volatile storage.