Merge branch 'develop-nb-iot-ntust' of https://gitlab.eurecom.fr/oai/openairinterface5g into develop-nb-iot-ntust

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

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

Develop Integration Branch: 2019 week 36

The following MR are included:

* MR 653 : Feature LTE-M PUSCH CE - 8 Repetitions
* MR 654 : Rfsimu config and CI scripting updates

  -- Properly stopping FlexRan Ctl in case of failure
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

  -- IperfNoS1 when eNB crashed
  -- LTE-M module failed attachment
  -- LTE-M module pinging
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

fix phy simulators build Pb: move snr_dB global to simulation code, add a channel mode section in configuration for snr_dB ,add a parameter flag in the config module to allow omitting prefix when modifying a parameter (for compatibility of -s option)

add channel model option to rfsimulator and prevent common libraries re-compilation when using both --UE --eNB options in build_oai script

add config options for rfsimulator, set a common lib for l1sim and rfsimulator, avoid simulation sources to be added twice in some execs (tau.c)

Signed-off-by: Mohamed Gamal <mohammed.abdelkhalek.ext@orange.com>

Functionalities Added:
	- Modify RAR message to use number of repetitions configuration added in last commit
	- Configure msg3 with number of repetitions
	- DCI configuration for repetitions
	- Repeat MAC UL config each SF for the number of repetitions
	- PHY combining of repeated SF
Signed-off-by: Mohamed Gamal <mohammed.abdelkhalek.ext@orange.com>

To control along with pusch_maxNumRepetitionCEmodeA_r13 the actual number of repetitions for PUSCH according to 36.213 table 8.2b
Scope of commit: Parsing parameter's value. The value should be used in future commits.
Signed-off-by: Mohamed Gamal <mohammed.abdelkhalek.ext@orange.com>

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

See merge request oai/openairinterface5g!649

Develop: Integration 2019 Week 30
Master Branch Release v1.1 Candidate

The following Merge Requests are included:

* MR 630 : nfapi interface bug fixes
* MR 638 : X2 HO (tdd, forwarding, end marker)
* MR 646 : Loadtester bugfixes
* MR 647 : fix power estimation
* MR 648 : CI: X2 Handover Testing