ttcn3: run_docker: remove :ro

Don't mount usr_local, var_local as read-only, so the environment is
more similar to our jenkins.

Fix for:
  + /data/upfd-setup.sh
  + command -v open5gs-upfd
  + upfd_bin=/usr/local/bin/open5gs-upfd
  + setcap cap_net_raw+ep /usr/local/bin/open5gs-upfd
  Failed to set capabilities on file '/usr/local/bin/open5gs-upfd': Read-only file system

Change-Id: I52d2989d91119f0f1673f49723f1055fe7428d15
1 file changed