Since I'm not able to rename process, I use this to kill particular process on my Ubuntu.

killall -v python -u odoo-test; (by user odoo-test)

Linux/Unix way will be to use 

bash -c "exec -a MyUniqueProcessName <command> &"

however, THIS WILL NOT WORK due to the way odoo.py is executed. The shabang in the odoo.py (the #!/usr/bin/env python) is starting an instance of python which overrides the name of the process.

A workaround is to get  the PID of the process and store it in a file which you can later use to kill the process you want. Here is the most rudimentary example:

Crate file with name start_as.sh with following content:
#!/bin/bash
./odoo.py &
odoo_pid=$!
echo $odoo_pid >$1

Than you can use
./start_as.sh mynew.pid
kill `cat mynew.pid`