Develop integration 2018 w46

See merge request oai/openairinterface5g!445

Merge remote-tracking branch 'origin/bladerf-support-fix-2018-w45' into develop_integration_2018_w46

A new option -live has been added to run live (ie. like the 'enb' tracer)
and options -live-ip and -live-port to select IP/port of the machine running
the eNodeB.

Some new options to control MIB and SIBs recording have been added.

Some global variables have been removed.

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>