Develop integration 2019 week 07 v2

Integration Branch: 2019 week 07 (version 2)

Integration of the following Merge Requests:

• MR 472: Resolve "ULSCH scheduler optimization
• MR 489: X2AP: mobility procedures, S1AP: handover signalling, RRC/MAC: handover case, GTP-U: end marker
• MR 493: cppcheck fixes
• MR 501: Issue397 telnet stats
• MR 503: rhel7.6 support
• MR 506: Hot fix on UE configuration module