open5gs/lib/gtp/support

• Install python-pip user@host ~/Documents/git/nextepc/lib/gtp/support$
  sudo apt-get install python-pip

• Install python-docx user@host ~/Documents/git/nextepc/lib/gtp/support$
  sudo pip install python-docx

• Change the format of standard specification from 29274-d80.doc to 29274-d80.docx using Microsoft Office 2007+

• Generate TLV support files user@host ~/Documents/git/nextepc/lib/s1ap/support$
  python gtp-tlv.py -f 29274-d80.docx -o ..