[VPP-1751] GSO segmentation fails when GSO size is greater than vlib_buffer size (i.e. 9K > 2048)

[vvalderrv]

1. 
   Thread 3 "vpp_wk_1" received signal SIGABRT, Aborted.

2. [Switching to Thread 0x7fffa836a700 (LWP 7452)]

3. __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

4. 
   51  ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.

5. (gdb) bt

6. #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

7. Fixed: ip6_fib_dump #1  0x00007ffff5a84801 in __GI_abort () at abort.c:79

8. add .gitlab-ci.yml in order to use ci/cd in gitlab #2  0x000055555555bfed in os_panic () at /home/sykazmi/vpp/src/vpp/vnet/main.c:355

9. fix issue with missing sample_main in sample plugin #3  0x00007ffff5e68bf3 in debugger () at /home/sykazmi/vpp/src/vppinfra/error.c:84

10. fix issue with missing sample_main in sample plugin #4  0x00007ffff5e68fc2 in _clib_error (how_to_die=2, function_name=0x0, line_number=0,

11.     fmt=0x7ffff768b858 "%s:%d (%s) assertion `%s' fails")

12.     at /home/sykazmi/vpp/src/vppinfra/error.c:143

13. fix issue with missing sample_main in sample plugin #5  0x00007ffff6c7023d in tso_segment_buffer (vm=0x7fffb58b60c0, ptd=0x7fffb55f7a80,

14.     do_tx_offloads=1, sbi0=613008, sb0=0x100256a400, n_bytes_b0=53754)

15.     at /home/sykazmi/vpp/src/vnet/interface_output.c:426

16. fix packets redirect ineffective on af-packet interface #6  0x00007ffff6c71126 in vnet_interface_output_node_inline_gso (vm=0x7fffb58b60c0,

17.     node=0x7fffb5e39a40, frame=0x7fffb62d0f40, vnm=0x7ffff7b63760 <vnet_main>, hi=0x7fffb5d71c78,

18.     do_tx_offloads=1, do_segmentation=1) at /home/sykazmi/vpp/src/vnet/interface_output.c:708

19. Decrement n_retry in tx_burst_vector_internal #7  0x00007ffff6c7168d in vnet_interface_output_node_inline (vm=0x7fffb58b60c0,

20.     node=0x7fffb5e39a40, frame=0x7fffb62d0f40, vnm=0x7ffff7b63760 <vnet_main>, hi=0x7fffb5d71c78,

21.     do_tx_offloads=1) at /home/sykazmi/vpp/src/vnet/interface_output.c:857

22. Stable/1810 #8  0x00007ffff6c7174a in vnet_interface_output_node (vm=0x7fffb58b60c0, node=0x7fffb5e39a40,

23.     frame=0x7fffb62d0f40) at /home/sykazmi/vpp/src/vnet/interface_output.c:878

24. Update stats.md #9  0x00007ffff63e57ed in dispatch_node (vm=0x7fffb58b60c0, node=0x7fffb5e39a40,

25.     type=VLIB_NODE_TYPE_INTERNAL, dispatch_state=VLIB_NODE_STATE_POLLING, frame=0x7fffb62d0f40,

26.     last_time_stamp=11707477852116422) at /home/sykazmi/vpp/src/vlib/main.c:1207

27. Merge pull request #1 from FDio/master #10 0x00007ffff63e5fae in dispatch_pending_node (vm=0x7fffb58b60c0, pending_frame_index=3,

28.     last_time_stamp=11707477852116422) at /home/sykazmi/vpp/src/vlib/main.c:1375

29. pci_dev in dpdk/device/cli.c for RTE_SCHED_COLLECT_STATS #11 0x00007ffff63e7bf1 in vlib_main_or_worker_loop (vm=0x7fffb58b60c0, is_main=0)

30.     at /home/sykazmi/vpp/src/vlib/main.c:1826

31. pci_dev in dpdk/device/cli.c for RTE_SCHED_COLLECT_STATS #12 0x00007ffff63e8474 in vlib_worker_loop (vm=0x7fffb58b60c0)

32.     at /home/sykazmi/vpp/src/vlib/main.c:1934

33. vpp crashes when attempting to run in kubernetes Pod  #13 0x00007ffff6426cb5 in vlib_worker_thread_fn (arg=0x7fffb6155c40)

34.     at /home/sykazmi/vpp/src/vlib/threads.c:1754

35. Merge pull request #1 from FDio/master #14 0x00007ffff5e89a68 in clib_calljmp ()

36.    from /home/sykazmi/vpp/build-root/install-vpp_debug-native/vpp/lib/libvppinfra.so.20.01

37. fix: main thread becomes infinite while loop when input "show node ud… #15 0x00007fffa8369e80 in ?? ()

38. fix compiling error with marvell pp2 plugin #16 0x00007ffff6421530 in vlib_worker_thread_bootstrap_fn (arg=0x7fffb6155c40)

39.     at /home/sykazmi/vpp/src/vlib/threads.c:573

40. 
    Backtrace stopped: previous frame inner to this frame (corrupt stack?)