[gdal-dev] Setting up bash completions on Ubunto 18

[Eric Knudstrup]

I have built and installed GDAL 3.7.1 on Ubuntu 18, except I'm having 
trouble getting it to recognize the bash completions.

Probably related, it tells me to install python-gdal:

$ gdal2tiles.py

Command 'gdal2tiles.py' not found, but can be installed with:

apt install python-gdal
Please ask your administrator.

I don't know how to remove that message.