.gitlab-ci.yml server unit missing dir reference

add reference to server in `make -C server launch_fuse_server`
2 jobs for feature-s/server_unit_tests in 3851 minutes and 12 seconds
Status Job ID Name Coverage
  Test Tools
passed #70876
test_tools

00:00:05

 
  Test Unit
canceled #70877
web
test_server_unit

64:11:06