82def9a516
/usr/bin/python may be python 2 on Focal, which causes problems with Ansible on the control host. By installing the python-is-python3 package we ensure that the correct interpreter is used. This change updates the installation documentation and development environment scripts. Story: 2004960 Task: 42579 Change-Id: Ie94099075bae3c491f9cf830c38e6cfc8af605a6