Make bgp_membership_test more robust
Make bgp_membership_test more robust

Arrange to call utility methods to enable/disable internal queues from
the bgp::Config task instead of calling them directly from main thread.

Change-Id: I74a5770415fc9a451d82077e502fb3f66999d795
Closes-Bug: 1734730

eonpatapon/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,rombie/contrail-controller