.gitlab-ci.yml: add CI from commit 73ed763b

.gitlab-ci.yml copied from based on commit 73ed763b

Signed-off-by: Adam Wujek <dev_public@wujek.eu>
3 jobs from v7.0-Jumbo-frames-fix-only in 101 minutes and 28 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Sim
manual #15385
modelsim_10.2a allowed to fail manual
job_scb_top_sim
 
  Syn
passed #15387
xilinx_ISE_14.7 allowed to fail manual
job_scb_top_18p_syn

01:41:22

canceled #15386
xilinx_ISE_14.7
job_scb_top_8p_syn

00:06